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plus

[pluhs]
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preposition
  1. more by the addition of; increased by: ten plus two is twelve.
  2. with the addition of; with: He had wealth plus fame.
adjective
  1. involving or noting addition.
  2. positive: a plus quantity.
  3. more (by a certain amount).
  4. Electricity. pertaining to or characterized by positive electricity: the plus terminal.
  5. Mycology. (in heterothallic fungi) designating, in the absence of morphological differentiation, one of the two strains of mycelia that unite in the sexual process.
  6. having a certain quality to an unusual degree: He has personality plus.
noun, plural plus·es, plus·ses.
  1. a plus quantity.
  2. Arithmetic. plus sign.
  3. something additional.
  4. a surplus or gain.
conjunction
  1. Informal. also; and; furthermore: A bicycle is cheaper than a car, plus it doesn't pollute the air.
adverb
  1. in addition; besides.
Idioms
  1. pluses and minuses, the good and bad points of something; the advantages and disadvantages; the pros and cons: She spent hours listing the pluses and minuses of each of the apartments she had looked at, trying to narrow down her choices.

Origin of plus

1570–80; < Latin plūs more; akin to Greek pleíōn, Old Norse fleiri more, Old English feolu, fela, German viel, Gothic filu, Old Irish il, Greek polý many

Usage note

Since plus as a preposition has long had the meanings “more by the addition of” and “with the addition of,” it was but a short step to a newer use, mainly in informal writing and speech, as a conjunction meaning “also, and, furthermore.” Although this use is increasing, many object to it, and it is rare in more formal writing. And plus is likewise objected to, especially for being redundant: The paper was delivered two hours late, and plus it was soaking wet.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

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British Dictionary definitions for pluses

plus

preposition
  1. increased by the addition offour plus two (written 4 + 2)
  2. with or with the addition ofa good job, plus a new car
adjective
  1. Also: positive (prenominal) indicating or involving additiona plus sign
  2. another word for positive (def. 8), positive (def. 9)
  3. on the positive part of a scale or coordinate axisa value of +x
  4. indicating the positive side of an electrical circuit
  5. involving positive advantage or gooda plus factor
  6. (postpositive) informal having a value above that which is stated or expectedshe had charm plus
  7. (postpositive) slightly above a specified standard on a particular grade or percentagehe received a B+ rating on his essay
  8. botany designating the strain of fungus that can only undergo sexual reproduction with a minus strain
noun
  1. short for plus sign
  2. a positive quantity
  3. informal something positive or to the good
  4. a gain, surplus, or advantage
Mathematical symbol: +

Word Origin

C17: from Latin: more; compare Greek pleiōn, Old Norse fleiri more, German viel much

usage

Plus, together with, and along with do not create compound subjects in the way that and does: the number of the verb depends on that of the subject to which plus, together with, or along with is added: this task, plus all the others, was (not were) undertaken by the government; the doctor, together with the nurses, was (not were) waiting for the patient
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 pluses

plus

n.

1570s, the oral rendering of the arithmetical sign +, from Latin plus "more, in greater number, more often" (comparative of multus "much"), altered (by influence of minus) from *pleos, from PIE *pele- (1) "to fill" (see poly-).

As a preposition, between two numbers to indicate addition, from 1660s. [Barnhart writes that this sense "did not exist in Latin and probably originated in commercial language of the Middle Ages."] Placed after a whole number to indicate "and a little more," it is attested from 1902. As a conjunction, "and," it is American English colloquial, attested from 1968. As a noun meaning "an advantage" from 1791. Plus fours (1921) were four inches longer in the leg than standard knickerbockers, to produce an overhang, originally a style associated with golfers. The plus sign itself has been well-known since at least late 15c. and is perhaps an abbreviation of Latin et (see et cetera).

Online Etymology Dictionary, © 2010 Douglas Harper

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