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al-

  1. variant of ad- before l: allure.
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Al-

  1. a word in Arabic names meaning “family” or “the house of”: Al-Saud, or the members of the house of Saud.
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Origin of Al-

From the Arabic word āl family
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

al- in Medicine

al-

pref.
  1. Variant ofad-
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The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.