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

  • Half: semicircle.
  • Partial; partially: semiconscious.
  • Resembling or having some of the characteristics of: semiofficial.
  • Occurring twice during: semimonthly. See Usage Note at bi-1.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • half
  • partial, incomplete
  • somewhat, rather, quasi-

from the GNU version of the Collaborative International Dictionary of English

  • A prefix signifying half, and sometimes partly or imperfectly.

from The Century Dictionary and Cyclopedia

  • A prefix of Latin origin, meaning ‘half’: much used in English in the literal sense, and, more loosely, to mean ‘in part, partly, almost, largely, imperfectly, incompletely.’

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

  • n. a trailer having wheels only in the rear; the front is supported by the towing vehicle
  • n. a truck consisting of a tractor and trailer together
  • n. one of the two competitions in the next to the last round of an elimination tournament


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

Middle English, from Latin sēmi-, half; see sēmi- in Indo-European roots.

from Wiktionary, Creative Commons Attribution/Share-Alike License

From Latin semi- ("half").


  • He beamed, thrown a bone by my use of the semi-"technical" term, "sequeing" . . . though, truth be told—"Glad to see you're coming along."

    Portland Music Listener [Card #5: The Heirophant] (WORK-IN-PROGRESS)

  • On the other hand, the semi- conductor industry is relatively insensitive to shipping costs.

    Mark Sunshine: The Small Silver Lining of $100 Oil

  • That sour history leaves Islamism as the last big idea standing—and standing at a moment when tens of millions of young Muslims find themselves undereducated, semi- or unemployed, and uniquely receptive to a world view with deep historic roots and heroic ambitions.

    Why Islamists Are Winning

  • Lang, who said nine out of 10 captured pirates are released because there isn't sufficient capacity to prosecute or incarcerate them, recommended establishment of specialized courts in semi- autonomous Somaliland and Puntland, and a third with Somali jurisdiction in Tanzania. -- Top News

  • Panoro Energy ASA PEN signed a rig contract with a unit of Transocean for the GSF Arctic I semi- submersible drilling rig to drill three wells on blocks BM-S-63, BM-S-71 and BM-S-72, in the Santos Basin offshore

  • The semi- autonomous Indian Ocean island nation is in a political union with Tanzania. -- Top News

  • Arsenal and Manchester United face fines over Champions League semi- Champions League draw becomes a six nations event as Uefa gets lucky Bayern Munich coach asks Uefa to intervene over Lyon postponement

    The Guardian World News

  • The disagreement marked the second day of the IMF's semi- annual meetings which drew policy makers from the lender's 187- nation membership to Washington. -- Top News

  • The administration declined to brand China as a currency manipulator in its semi- annual report to Congress in December. -- Top News

  • Including newbuildings, the Company has a fleet of 72 vessels, including 28 crude oil tankers VLCC and Suezmax, two chemical tankers, five oil/bulk/ore vessels, 12 drybulk carriers including seven newbuildings, 15 container vessels, six offshore supply vessels, one jack-up drilling rigs, one ultra-deepwater drillship and two ultra-deepwater semi- submersible drilling rigs.


Log in or sign up to get involved in the conversation. It's quick and easy.