neurosis

(a)  

ganglion

(a)  

virus

(a)  

phalanx

(a)  

fibroma

(a)  

varix

(a)  

diverticulum

(a)  

scapula

(a)  

embolus

(a)  

larynx

(a)  

carcinoma

(a)  

calix

(a)  

acetabulum

(a)  

sclera

(a)  

bronchus

(a)  

diagnosis

(a)  

sinus

(a)  

septum

(a)  

index

(a)  

to form the plural of singular terms ending in -is

(a)  

to form the plural of many singular words ending in -us

(a)  

to form the plural of singular words ending in -a

(a)  

to form the plural of singular words ending in -um

(a)  

to form the plural of words ending in -ix or -ex

(a)  

to form the plural of words ending in -oma

(a)  

to form the plural of words ending in -nx

(a)  

to form the plural of words ending in -on

(a)  

to form the plural of words ending in -ax

(a)  

bulla

(a)  

bursa

(a)  

vertebra

(a)  

anastamosis

(a)  

epiphysis

(a)  

metastasis

(a)  

prosthesis

(a)  

pubis

(a)  

apex

(a)  

varix

(a)  

ganglion

(a)  

spermatozoon

(a)  

bacterium

(a)  

diverticulum

(a)  

ovum

(a)