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AAPC Medical Terminology > Word Prefixes > Flashcards

Word Prefixes Flashcards

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USMLE® Step 1 flashcards
1
Q

Prefixes for Numbers

Define: Prim/i-

A

Definition: First

Example: Primary (PRI-mar-e)

Def of Example: First

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2
Q

Prefixes for Numbers

Define: Mon/o-

A

Definition: One

Example: Monocular (mon-OK-u-lar)

Def of Example: Having one eyepiece or affecting one eye.

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3
Q

Prefixes for Numbers

Define: Uni-

A

Definition: One

Example: Unite (u-NITE)

Def of Example: Form into one part.

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4
Q

Prefixes for Numbers

Define: Hemi-

A

Definition: Half, One Side

Example: Hemisphere (HEM-ih-sfere)

Def of Example: One half of a rounded structure.

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5
Q

Prefixes for Numbers

Define: Semi-

A

Definition: Half, Partial

Example: Semipermeable (sem-e-PER-me-ah-bl)

Def of Example: Partially permeable.

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6
Q

Prefixes for Numbers

Define: Bi-

A

Definition: Two, Twice

Example: Binary (BI-nar-e)

Def of Example: Made up of two parts.

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7
Q

Prefixes for Numbers

Define: Di-

A

Definition: Two, Twice

Example: Diatomic (di-ah-TOM-ik)

Def of Example: Having two atoms

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8
Q

Prefixes for Numbers

Define: Dipl/o

A

Definition: Double

Example: Diplococci (dip-lo-KOK-si)

Def of Example: Round bacteria (cocci) that grow in groups of two.

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9
Q

Prefixes for Numbers

Define: Tri-

A

Definition: Three

Example: Tricuspic (tri-KUS-pid)

Def of Example: Having three cups or points.

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10
Q

Prefixes for Numbers

Define: Quadr/i

A

Definition: Four

Example: Quadruplet (kwah-DRUPE-let)

Def of Example: One of four babies born together.

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11
Q

Prefixes for Numbers

Define: Tetra-

A

Definition: Four

Example: Tetralogy (tet-RAL-o-je)

Def of Example: A group of four.

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12
Q

Prefixes for Numbers

Define: Multi-

A

Definition: Many

Example: Multicellular (mul-ti-SEL-u-lar)

Def of Example: Consisting of many cells

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13
Q

Prefixes for Numbers

Define: Poly-

A

Definition: Many, Much

Example: Polymorphous (pol-e-MOR-fus)

Def of Example: Having many forms (morph/o)

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14
Q

Prefixes for Colors

Define: Cyan/o-

A

Definition: Blue

Example: Cyanosis (si-ah-NO-sis)

Def of Example: Bluish discoloration of the skin due to lack of oxygen.

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15
Q

Prefixes for Colors

Define: Erythr/o-

A

Definition: Red

Example: Erythrocyte (eh-RITH-ro-site)

Def of Example: Red blood cells (-cyte)

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16
Q

Prefixes for Colors

Define: Leuk/o-

A

Definition: White, Colorless

Example: Leukemia (lu-KE-me-ah)

Def of Example: Cancer of white blood cells

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17
Q

Prefixes for Colors

Define: Melan/o-

A

Definition: Black, Dark

Example: Melanin (MEL-ah-nin)

Def of Example: The dark pigment that colors the hair and skin

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18
Q

Prefixes for Colors

Define: Xanth/o-

A

Definition: Yellow

Example: Xanthoma (zan-THO-mah)

Def of Example: Yellow growth (-oma) on the skin.

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19
Q

Negative Prefixes

Define: A-, An-

A

Definition: Not, Without, Lack of, Absence

Example: Anhydrous (an-HI-drus)

Def of Example: Lacking water (hydr/o)

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20
Q

Negative Prefixes

Define: Anti-

A

Definition: Against

Example: Antiseptic (an-tih-SEP-tik)

Def of Example: Agent used to prevent infection (sepsis)

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21
Q

Negative Prefixes

Define: Contra-

A

Definition: Against, Opposite, Opposed

Example: Contraindicated (kon-trah-IN-dih-ka-ted)

Def of Example: Against recommendations, not advisable

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22
Q

Negative Prefixes

Define: De-

A

Definition: Down, Without, Removal, Loss

Example: Decalcify (de-KAL-sih-fi)

Def of Example: Remove calcium (calc/i) from

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23
Q

Negative Prefixes

Define: Dis-

A

Definition: Absence, Removal, Separation

Example: Dissect (di-SEKT)

Def of Example: To separate tissues for anatomic study

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24
Q

Negative Prefixes

Define: In, Im- (used before b, m, p)

A

Definition: Not

Example: Incontinent (in-KON-tih-nent)

Def of Example: Not able to contain or control discharge or excretions

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25
Q

Negative Prefixes

Define: Non-

A

Definition: Not

Example: Noncontributory (non-kon-TRIB-u-tor-e)

Def of Example: Not significant, not adding information to a medical diagnosis

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26
Q

Negative Prefixes

Define: Un-

A

Definition: Not

Example: Uncoordinated (un-ko-OR-dih-na-ted)

Def of Example: Not coordinated, not working together

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27
Q

Prefixes for Direction:

Define: Ab-

A

Definition: Away from

Example: Abduct (ab-DUKT)

Def of Example: To move away from the midline

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28
Q

Prefixes for Direction:

Define: Ad-

A

Definition: Toward, Near

Example: Adduct (ad-DUKT)

Def of Example: To move toward the midline

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29
Q

Prefixes for Direction:

Define: Dia-

A

Definition: Through

Example: Diarrhea (di-ah-RE-ah)

Def of Example: Frequent discharge of fluid fecal matter

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30
Q

Prefixes for Direction:

Define: Per-

A

Definition: Through

Example: Percutaneous (per-ku-TA-ne-us)

Def of Example: Through the skin

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31
Q

Prefixes for Direction:

Define: Trans-

A

Definition: Through

Example: Transected (tran-SEKT-ed)

Def of Example: Cut (sectioned) through or across

32
Q

Prefixes for Degree:

Define: Hyper-

A

Definition: Over, Excess, Abnormally high, Increased

Example: Hyperthermia (hi-per-THER-me-ah)

Def of Example: High body temperature

33
Q

Prefixes for Degree:

Define: Hypo-

A

Definition: Under, Below, Abnormally low, Decreased

Example: Hyposecretion (hi-po-se-KRE-shun)

Def of Example: Underproduction of a substance

34
Q

Prefixes for Degree:

Define: Olig/o-

A

Definition: Few, Scanty

Example: Oligospermia (ol-ih-go-SPER-me-ah)

Def of Example: Abnormally low number of sperm cells in semen

35
Q

Prefixes for Degree:

Define: Pan-

A

Definition: All

Example: Pandemic (pan-DEM-ik)

Def of Example: Disease affecting an entire population

36
Q

Prefixes for Degree:

Define: Super-

A

Definition: Above, Excess

Example: Supernumerary (su-per-NU-mer-ar-e)

Def of Example: In excess number

37
Q

Prefixes for Size & Comparison:

Define: Equi-

A

Definition: Equal, Same

Example: Equilibrium (e-kwih-LIB-re-um)

Def of Example: A state of balance, state in which conditions remain the same

38
Q

Prefixes for Size & Comparison:

Define: eu-

A

Definition: True, Good, Easy, Normal

Example: Euthanasia

Def of Example: Easy or painless death (thanat/o)

39
Q

Prefixes for Size & Comparison:

Define: hetero-

A

Definition: Other, Different, Unequal

Example: Heterogeneous (het-er-o-JE-ne-us)

Def of Example: Composed of different materials, not uniform

40
Q

Prefixes for Size & Comparison:

Define: Homo-, Homeo-

A

Definition: Same, Unchanging

Example: Homograft (HO-mo-graft)

Def of Example: Tissue transplanted to another of the same species

41
Q

Prefixes for Size & Comparison:

Define: Iso-

A

Definition: Equal, Same

Example: Isocellular (i-so-CEL-u-lar)

Def of Example: Composed of similar cells

42
Q

Prefixes for Size & Comparison:

Define: Macro-

A

Definition: Large, Abnormally large

Example: Macroscopic (mak-ro-SCOP-ik)

Def of Example: Large enough to be seen without a microscope

43
Q

Prefixes for Size & Comparison:

Define: Mega-, Megal/o

A

Definition: Large, Abnormally Large

Example: Megacolon (meg-ah-KO-lon)

Def of Example: Enlargement of the colon

44
Q

Prefixes for Size & Comparison:

Define: Micro-

A

Definition: Small

Example: Microcyte (MI-kro-site)

Def of Example: Very small cell (-cyte)

45
Q

Prefixes for Size & Comparison:

Define: Neo-

A

Definition: New

Example: Neonate (NE-0-nate)

Def of Example: A newborn infant

46
Q

Prefixes for Size & Comparison:

Define: Normo-

A

Definition: Normal

Example: Normovolemia (nor-mo-vol-E-me-ah)

Def of Example: Normal blood volume

47
Q

Prefixes for Size & Comparison:

Define: Ortho-

A

Definition: Straight, Correct, Upright

Example: Orthodontics (or-tho-DON-tiks)

Def of Example: Branch of dentistry concerned with correction and straightening of the teeth (odont/o)

48
Q

Prefixes for Size & Comparison:

Define: Poikilo-

A

Definition: Varied, Irregular

Example: Poikilothermic (poy-kih-lo-THER-mik)

Def of Example: Having variable body temperature (therm/o)

49
Q

Prefixes for Size & Comparison:

Define: Pseudo-

A

Definition: False

Example: Pseudoplegia (su-do-PLE-ji-ah)

Def of Example: False paralysis (-plegia)

50
Q

Prefixes for Size & Comparison:

Define: Re-

A

Definition: Again, Back

Example: Reflux (RE-flux)

Def of Example: Backward flow

51
Q

Prefixes for Time and/or Position:

Define: Ante-

A

Definition: Before

Example: Antenatal (an-te-na-tal)

Def of Example: Before birth (nat/i)

52
Q

Prefixes for Time and/or Position:

Define: Pre-

A

Definition: Before, In font of

Example: Premature (pre-mah-CHUR)

Def of Example: Occurring before the proper time

53
Q

Prefixes for Time and/or Position:

Define: Pro-

A

Definition: Before, In front of

Example: Prodrome (PRO-drome)

Def of Example: Symptom that precedes a disease

54
Q

Prefixes for Time and/or Position:

Define: Post-

A

Definition: After, Behind

Example: Postnasal (post-NA-sal)

Def of Example: Behind the nose (nas/o)

55
Q

Prefixes for Position:

Define: Dextr/o-

A

Definition: Right

Example: Dextrogastria (deks-tro-GAS-tre-ah)

Def of Example: Displacement of the stomach (gastr/o) to the right

56
Q

Prefixes for Position:

Define: Sinistr/o-

A

Definition: Left

Example: Sinistromanual (sin-is-tro-MAN-u-al)

Def of Example: Left-handed

57
Q

Prefixes for Position:

Define: Ec, Ecto-

A

Definition: Out, Outside

Example: Ectopic (ek-TOP-ik)

Def of Example: Out of normal position

58
Q

Prefixes for Position:

Define: Ex/o-

A

Definition: Away from, Outside

Example: Excise (ek-SIZE)

Def of Example: To cut out

59
Q

Prefixes for Position:

Define: end/o-

A

Definition: In, Within

Example: Endoderm (EN-do-derm)

Def of Example: Inner layer of a developing embryo

60
Q

Prefixes for Position:

Define: mes/o-

A

Definition: Middle

Example: Mesencephalon (mes-en-CEF-ah-lon)

Def of Example: Middle portion of the brain (encephalon), Midbrain

61
Q

Prefixes for Position:

Define: syn-, sym- (used before b, m, p)

A

Definition: Together

Example: Synapse (SIN-aps)

Def of Example: A junction between two nerve cells

62
Q

Prefixes for Position:

Define: Tel/e-, Tel/o-

A

Definition: End, Far, At a distance

Example: Teletherapy (tel-eh-THER-ah-pe)

Def of Example: Radiation therapy delivered at a distance from the body

63
Q

Prefixes for Position & Direction:

Define: Circum-

A

Definition: Around

Example: Circumoral

Def of Example: Around the mouth

64
Q

Prefixes for Position & Direction:

Define: Peri-

A

Definition: Around

Example: Periorbital

Def of Example: Around the orbit (eye socket)

65
Q

Prefixes for Position & Direction:

Define: Intra-

A

Definition: In, Within

Example: Intravascular

Def of Example: Within a vessel (vascul/o)

66
Q

Prefixes for Position & Direction:

Define: Epi-

A

Definition: On, Over

Example: Epithelial

Def of Example: Referring to the epithelium, tissue that covers surfaces.

67
Q

Prefixes for Position & Direction:

Define: Extra-

A

Definition: Outside

Example: Extrathoracic

Def of Example: Outside the thorax

68
Q

Prefixes for Position & Direction:

Define: Infra-

A

Definition: Below

Example: Infrascapular

Def of Example: Below the scapula (shoulder blade)

69
Q

Prefixes for Position & Direction:

Define: sub-

A

Definition: Below, Under

Example: Sublingual

Def of Example: Under the tongue (lingu/o)

70
Q

Prefixes for Position & Direction:

Define: Inter-

A

Definition: Between

Example: Intercostal

Def of Example: Between the ribs (cost/o)

71
Q

Prefixes for Position & Direction:

Define: Justa-

A

Definition: Near, Beside

Example: Juxtaposition

Def of Example: A location near or beside another structure

72
Q

Prefixes for Position & Direction:

Define: Para-

A

Definition: Near, Beside

Example: Parasagittal

Def of Example: Near or beside a sagittal plane

73
Q

Prefixes for Position & Direction:

Define: Retro

A

Definition: Behind, Backward

Example: Retrouterine

Def of Example: Behind the uterus

74
Q

Prefixes for Position & Direction:

Define: Supra-

A

Definition: Above

Example: Suprapatellar

Def of Example: Above the patella (kneecap)

75
Q

Prefixes for Position & Direction:

Define:

A

Definition:

Example:

Def of Example:

AAPC Medical Terminology (11 decks)

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