[ sem-ee-ar-id, sem-ahy- ]

adjective(of a region, land, etc.)
  1. characterized by very little annual rainfall, usually from 10 to 20 inches (25 to 50 centimeters): the struggle to raise vegetables in semiarid regions.

Origin of semiarid

An Americanism dating back to 1895–1900; semi- + arid

Other words from semiarid

  • sem·i·a·rid·ity [sem-ee-uh-rid-i-tee, sem-ahy-], /ˌsɛm i əˈrɪd ɪ ti, ˌsɛm aɪ-/, noun

Words Nearby semiarid Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

How to use semiarid in a sentence

  • But the action of wind is most strikingly effective in desert and semiarid regions.

    Geology | William J. Miller
  • Because of its semiarid climate, the State has only 600 square miles of wooded area.

    North Dakota | Various

British Dictionary definitions for semiarid


/ (ˌsɛmɪˈærɪd) /

  1. characterized by scanty rainfall and scrubby vegetation, often occurring in continental interiors: the semiarid regions of Australia

Derived forms of semiarid

  • semiaridity, noun

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

Scientific definitions for semiarid


[ sĕm′ē-ărĭd ]

  1. Having low precipitation but able to support grassland and scrubby vegetation. Steppes have semiarid climates.

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