locant

By surface analysis, loc(us) +‎ -ant

• (General American) IPA^(key): /ˈloʊkənt/

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locant

Wikipedia

locant (plural locants)

1. (organic chemistry) That part of the name of a compound (often a letter or number) that describes the position of an atom, residue or functional group.

   The 2 in hexan-2-one is a locant.

• Calton, coltan

locant

1. third-person plural present active indicative of locō