Origin of hecto-Fr, contr ; from Classical Greek hekaton, hundred
Origin of hecto-French, alteration of Greek hekaton, hundred; see dek&mlowring; in Indo-European roots.
This prefix is not used in official scientific contexts. For example, "1 hm" (one hectometre) is written instead as either "100 m" or "0.1 km".
From French, from Ancient Greek ἑκατόν (hekaton, “hundred”).