-mere

1.
a combining form meaning “part,” used in the formation of compound words:
blastomere.
Compare -mer, -merous.
Origin
combining form representing Greek méros
British Dictionary definitions for -mere

-mere

combining form
1.
indicating a part or division: blastomere
Derived Forms
-meric, combining_form:in_adjective
Word Origin
from Greek meros part, portion
-mere in Medicine

-mere or -mer
suff.
Part; segment: blastomere, polymer.

-mere in Science
-mere or -mer  
A suffix meaning "part" or "segment," as in blastomere, one of the cells that form a blastula.