-ome

Etymology 1

Alteration of -oma, from Ancient Greek -ωμα (-ōma).

Only partially cognate to -some (“body”), from σῶμα (sôma, “body”), in that both share the case ending -μα (-ma), but the ω is unrelated.

Suffix

-ome

1. A mass of something.

Etymology 2

Back-formation from mitome, reinforced by chromosome. Early examples include biome (1916) and genome, from German Genom (1920).Some association with genetics due to occurrence in chromosome and genome.

Suffix

-ome

1. (biology) The complete whole of a class of substances for a species or an individual.