Definition from Wiktionary, the free dictionary
See also hecto
Alternative forms 
- hect- (before a vowel)
From French, from Ancient Greek ἑκατόν (hekaton, “hundred”).
- In the International System of Units and other metric systems of units, multiplying the unit to which it is attached by 100. Symbol: h
Usage notes 
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".
See also