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nor-

   Also found in: Dictionary/thesaurus, Encyclopedia, Wikipedia 0.02 sec.
nor- chemical prefix denoting (a) a compound of normal structure (having an unbranched chain of carbon atoms) that is isomeric with one having a branched chain, or (b) a compound whose chain or ring contains one less methylene (CH2) group than does that of its homologue.
nor-
pref.
A precursor compound that differs from its successor by the absence of a radical group, usually methyl: norepinephrine.

nor-
chemical prefix denoting (1) a compound of normal structure (having an unbranched chain of carbon atoms) that is isomeric with one having a branched chain, or (2) a compound whose chain or ring contains one less methylene (CH2) group than does that of its homolog.


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