or S.E.


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

Origin of se-

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

Examples from the Web for se

Contemporary Examples of se

  • With her characteristic fierce energy, Clinton poured herself into the fight, chanting “Si, se puede” at rally after rally.

    The Daily Beast logo
    How Ted Cruz Can Win in 2016

    David Frum

    October 25, 2013

  • What I usually depend upon is the tax credits from the kids and the EITC to offset the SE tax.

    The Daily Beast logo
    More On That Wrinkly Tax Code

    Megan McArdle

    November 20, 2012

  • One read: “db cooper was a great man... the wheres waldo bandit will be better... se ya gys in seattle next (sic).”

    The Daily Beast logo
    The 'Where's Waldo' Bank Robber

    Winston Ross

    September 28, 2010

  • Sí, se puede was a rallying cry for American labor unions when Obama was still at high school.

    The Daily Beast logo
    Time to Make Nice with Cuba?

    Alex Von Tunzelmann

    December 31, 2008

  • So it was a surprise that the first thing I noticed outside Havana airport this month was a mural proclaiming “ Sí, se puede.”

    The Daily Beast logo
    Time to Make Nice with Cuba?

    Alex Von Tunzelmann

    December 31, 2008

Historical Examples of se

  • 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


the chemical symbol for
  1. selenium


symbol for
  1. southeast(ern)
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).

Online Etymology Dictionary, © 2010 Douglas Harper

se in Medicine


  1. The symbol for the elementselenium
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.

se in Science


  1. The symbol for selenium.


  1. A nonmetallic element that occurs in a gray crystalline form, as a red powder, or as a black glassy material. It is highly photosensitive and can be used to convert light into electricity. Its ability to conduct electricity also increases with higher exposure to light. For these reasons selenium is used in photocopying technology, photography, and solar cells. Atomic number 34; atomic weight 78.96; melting point 217°C; boiling point 684.9°C; specific gravity (gray) 4.79; (red) 4.5; (black) 4.28; valence 2, 4, or 6. See Periodic Table.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.