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See more synonyms for Se on Thesaurus.com
Symbol, Chemistry.
  1. selenium.
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or S.E.


  1. a prefix occurring in loanwords from Latin, where it meant “apart”: seduce; select.
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Origin of se-

< Latin sē(d) (preposition), sē- (prefix) without, apart
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Examples from the Web for se

Contemporary Examples

Historical Examples

  • After which, thar ain't no se'f respectin' camp that'll stand for my game.'

    Faro Nell and Her Friends

    Alfred Henry Lewis

  • "I'se warrant he's gleb eneuch to call for his siller when it's due to him," said a third.

    One Of Them

    Charles James Lever

  • By this ye may se it is harde to fynde a woman wythout an excuse.

  • By this a man may se, that a womans answer is neuer to seke.

  • By this tale ye may se, that the children in this our tyme be very prudent to get money.

British Dictionary definitions for se


the internet domain name for
  1. Sweden
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the chemical symbol for
  1. selenium
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symbol for
  1. southeast(ern)
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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 se


word-forming element, from Latin se-, collateral form of sed- "without, apart, aside, on one's own," related to sed, Latin reflexive pronoun (accusative and ablative), from PIE *sed-, extended form of root *s(w)e-, pronoun of the third person and reflexive (cf. German sich; see idiom).

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Online Etymology Dictionary, © 2010 Douglas Harper

se in Medicine


  1. The symbol for the elementselenium

se in Science



The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.