[nawr; unstressed ner] 
| 1. | (used in negative phrases, esp. 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. |
| 2. | (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. |
| 3. | (used after an affirmative clause, or as a continuative, in the sense of and not): They are happy, nor need we worry. |
| 4. | Older Use. than. |
| 5. | Archaic. (used without a preceding neither, the negative force of which is understood): He nor I was there. |
| 6. | Archaic. (used instead of neither as correlative to a following nor): Nor he nor I was there. |
| 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. |
| a Boolean operator that returns a positive result when both operands are negative. |
| nor 1 (nôr; nər when unstressed) conj. And not; or not; not either: has neither phoned nor written us; life forms that are neither plants nor animals. [Middle English : ne, no; see no1 + or, or; see or1.] Usage Note: When using neither in a balanced construction that negates two parts of a sentence, nor (not or) must be used in the second clause: She is neither able nor (not or) willing to go. Similarly, when negating the second of two negative independent clauses, nor (not or) must be used: He cannot find anyone now, nor does he expect to find anyone in the future; Jane will never compromise with Bill, nor will Bill compromise with Jane. Note that in these constructions, nor causes an inversion of the auxiliary verb and the subject (does he ... will Bill ...). However, when a verb is negated by not or never, and is followed by a verb phrase that is also to be negated (but not an entire clause), either or or nor can be used: He will not permit the change, or (or nor) even consider it. In noun phrases of the type no this or that, or is actually more common than nor: He has no experience or interest (less frequently nor interest) in chemistry. Or is also more common than nor when such a noun phrase, adjective phrase, or adverb phrase is introduced by not: He is not a philosopher or a statesman. They were not rich or happy. See Usage Notes at neither, or1. |
| nor 2 (nôr, nər when unstressed) conj. Chiefly Southern & Midland U.S. Than. [Middle English, perhaps ultimately from nor, nor; see nor1.] |
| NOR (nôr) n. A logical operator that consists of a logical OR followed by a logical NOT and returns a true value only if both operands are false. |
nor- pref.
A precursor compound that differs from its successor by the absence of a radical group, usually methyl: norepinephrine.
NOR
Not OR.
The Boolean function which is true if none of its inputs are true and false otherwise, the logical complement of inclusive OR. The binary (two-input) NOR function can be defined (written as an infix operator):
A NOR B = NOT (A OR B) = (NOT A) AND (NOT B)
Its truth table is:
A | B | A NOR B --+---+--------- F | F | T F | T | F T | F | F T | T | F
NOR, like NAND, forms a complete set of Boolean functions on its own since it can be used to make NOT, AND, OR and any other Boolean function:
NOT A = A NOR A
A OR B = NOT (A NOR B)
A AND B = (NOT A) NOR (NOT B)
(1995-02-06)
nor
see hide nor hair; neither fish nor fowl; neither here nor there; rhyme or reason (neither rhyme nor reason).
NOR
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