from The American Heritage® Dictionary of the English Language, 4th Edition

  • n. The act of joining.
  • n. The state of being joined.
  • n. A joint or simultaneous occurrence; concurrence: the conjunction of historical and economic forces that created a depression.
  • n. One resulting from or embodying a union; a combination: "He is, in fact, a remarkable conjunction of talents” ( Jerry Adler).
  • n. Grammar The part of speech that serves to connect words, phrases, clauses, or sentences.
  • n. Grammar Any of the words belonging to this part of speech, such as and, but, as, and because.
  • n. Astronomy The position of two celestial bodies on the celestial sphere when they have the same celestial longitude.
  • n. Logic A compound proposition that has components joined by the word and or its symbol and is true only if both or all the components are true.
  • n. Logic The relationship between the components of a conjunction.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. The act of joining, or condition of being joined.
  • n. Sexual intercourse.
  • n. A word used to join other words or phrases together into sentences. The specific conjunction used shows how the two joined parts are related. Example: Bread, butter and cheese.
  • n. The alignment of two bodies in the solar system such that they have the same longitude when seen from Earth.
  • n. An aspect in which planets are in close proximity to one another.
  • n. The proposition resulting from the combination of two or more propositions using the ∧ () operator.

from the GNU version of the Collaborative International Dictionary of English

  • n. The act of conjoining, or the state of being conjoined, united, or associated; union; association; league.
  • n. The meeting of two or more stars or planets in the same degree of the zodiac. See the Note under Aspect, n., 6.
  • n. A connective or connecting word; an indeclinable word which serves to join together sentences, clauses of a sentence, or words.

from The Century Dictionary and Cyclopedia

  • n. A joining or meeting of individuals or of distinct things; union; connection; combination; association.
  • n. In astronomy, the meeting of two or more stars or planets in the same longitude: as, the conjunction of the moon with the sun, or of Jupiter and Saturn.
  • n. In grammar, a connective particle serving to unite clauses of a sentence, or coördinate words in the same sentence or clause, and indicating their relation to one another.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • n. something that joins or connects
  • n. the state of being joined together
  • n. the grammatical relation between linguistic units (words or phrases or clauses) that are connected by a conjunction
  • n. (astronomy) apparent meeting or passing of two or more celestial bodies in the same degree of the zodiac
  • n. the temporal property of two things happening at the same time
  • n. an uninflected function word that serves to conjoin words or phrases or clauses or sentences


from The American Heritage® Dictionary of the English Language, 4th Edition

Middle English coniunccioun, from Old French conjunction, conjuncion, from Latin coniūnctiō, coniūnctiōn-, a joining, conjunction (in grammatical sense, translation of Greek sundesmos, binding together, conjunction), from coniūnctus, past participle of coniungere, to join; see conjoin.

from Wiktionary, Creative Commons Attribution/Share-Alike License

Via Old French from Latin coniūnctiō ("joining"), from coniungere ("to join").


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  • A traditional category discarded by the CGEL, which divides them amongst a few coordinators (and, or, nor, but), a few subordinators (that, if, to, for), and for the most part prepositions (after, before, when, because, despite etc.).

    August 7, 2008

  • See pregnant pause for another meaning of conjunction!

    July 25, 2008

  • And don't start a sentence with a conjunction.

    January 25, 2007