a combining form meaning “insect,” used in the formation of compound words:
entomology.
Origin
combining form of Greekéntomos notched, éntoma (noun use of neuter plural) insects, verbid of entémnein to cut in or up, equivalent to en-en-2 + tómos cut; see -tomy
British Dictionary definitions for entomo-
entomo-
combining form
1.
indicating an insect: entomology
Word Origin
from Greek entomon insect (literally: creature cut into sections), from en- in + -tomon, from temnein to cut