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Homo

1. (Science: zoology) The genus of primates that includes humans. Homo sapiens, modern human beings.

Origin: L. Man

2. (Science: prefix) Combining form meaning the same, alike; opposite of hetero-.

3. (Science: chemistry) a prefix used to indicate insertion of one more carbon atom in a chain (i.e., insertion of a methylene moiety).

Origin: g. Homos, the same