gastro-

1.
a combining form meaning “stomach,” used in the formation of compound words:
gastrology.
Also, especially before a vowel, gastr-.
Origin
< Greek, combining form of gastḗr
British Dictionary definitions for gastro-

gastro-

combining form
1.
stomach: gastroenteritis, gastritis
Word Origin
from Greek gastēr
Word Origin and History for gastro-

scientific word-forming element meaning "stomach," before vowels gastr-, from Greek gastro-, comb. form of gaster (genitive gastros) "belly, paunch" (see gastric).

gastro- in Medicine

gastro- or gastr-
pref.
Stomach; gastric: gastritis.