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Definition of Locant
1. Noun. (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 e.g. the ''2'' in ''hexan-2-one'' ¹
¹ Source: wiktionary.com
Medical Definition of Locant
1. A number or letter preceding a substituent name in the name of a complex chemical that specifies the position (location) of the substituent on the parent molecule; e.g., 5 in 5-methyluridine, S in S-adenosylmethionine. (05 Mar 2000)
Lexicographical Neighbors of Locant
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