Definition of nor- in English:

nor-

Syllabification: nor-

prefix

Chemistry
  • Denoting an organic compound derived from another, in particular by the shortening of a chain or ring by the removal of one methylene group or by the replacement of one or more methyl side chains by hydrogen atoms: norepinephrine

Origin

from nor(mal).

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Word of the day maelstrom
Pronunciation: ˈmālˌsträm
noun
a powerful whirlpool in the sea