[nawr; unstressed ner]


(used in negative phrases, especially after neither, to introduce the second member in a series, or any subsequent member): Neither he nor I will be there. They won't wait for you, nor for me, nor for anybody.
(used to continue the force of a negative, as not, no, never, etc., occurring in a preceding clause): He left and I never saw him again, nor did I regret it.
(used after an affirmative clause, or as a continuative, in the sense of and not): They are happy, nor need we worry.
Older Use. than.
Archaic. (used without a preceding neither, the negative force of which is understood): He nor I was there.
Archaic. (used instead of neither as correlative to a following nor): Nor he nor I was there.

Origin of nor

1300–50; Middle English, contraction of nother, Old English nōther, equivalent to ne not + ōther (contraction of ōhwæther) either; cf. or1
Can be confusedand and/or nor or (see usage note at and) (see usage note at and/or)

Usage note

See neither.




a Boolean operator that returns a positive result when both operands are negative.

Origin of NOR





a combining form used in the names of chemical compounds which are the normal or parent forms of the compound denoted by the base words: l-norepinephrine.

Origin of nor-

short for normal Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Related Words for nor


British Dictionary definitions for nor


conjunction, preposition (coordinating)

neither ... nor (used to join alternatives) and notneither measles nor mumps
(foll by an auxiliary verb or have, do, or be used as main verbs) (and) not … eitherthey weren't talented — nor were they particularly funny
dialect thanbetter nor me
poetic neithernor wind nor rain

Word Origin for nor

C13: contraction of Old English nōther, from nāhwæther neither


combining form

indicating that a chemical compound is derived from a specified compound by removal of a group or groupsnoradrenaline
indicating that a chemical compound is a normal isomer of a specified compound

Word Origin for nor-

by shortening from normal
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Word Origin and History for nor

c.1300, contraction of Middle English nauther (see neither). Influenced in form by or.

Online Etymology Dictionary, © 2010 Douglas Harper

nor in Medicine



A precursor compound that differs from its successor by the absence of a radical group, usually methyl:norepinephrine.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.

Idioms and Phrases with nor


see hide nor hair; neither fish nor fowl; neither here nor there; rhyme or reason (neither rhyme nor reason).

The American Heritage® Idioms Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.