A Greek suffix meaning "bearer" or "producer". For example:

Amphora "carry on both sides" A jar with two handles, one on either side of the opening
Ctenophore "comb bearer", a phylum of jellyfish-like animals with rows of tentacles that resemble a comb
Phosphorus "bringer of light" A chemical element that emits visible light

Ed. note (2008-03-11): Revised to remove assertion that word is primarily Latin. Word is purely of Greek origin. -ap