Etymology Rules Flashcards
When a Latin singular noun ends in –a
Form the plural by changing to –ae
(ending pronounced as an “ee”)
Areola
Areolae
Patella
Patellae
Scapula
Scapulae
Vertebra
Vertebrae
When a Latin singular noun ends in –us
form the plural by changing ending to –i
(Ending sounds like “eye”)
Bronchus
Bronchi
Nucleus
Nuclei
Syllabus
Syllabi
Alumnus
Alumni
Atrium
Atria
When a Latin singular noun ends in –um
Make it plural by changing ending to –a
Bacterium
Bacteria
Labium
Labia
When a Latin singular noun ends in –is
Form the plural by changing ending to –es
(Pronounced “eez”)
Diagnosis
Diagnoses
(Dy-ag-noh-seez)
Testis
Testes
When a gingular noun ends in –ex
Form the plural by changing ending to –ices
(Pronounced “ih-seez”)
Apex
Apices
AA-pih-seez
Index
Indices
When a Latin singular noun ends in –ix
Form the plural by changing ending to –ices
(“ih-seez”)
Helix
Helices
When a Greek singular noun ends in –is
form the plural by changing ending to –ides
“ih-deez”
Epididymis
Epididymides
“epididymih-deez”