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aeriform

[air-uh-fawrm, ey-eer-]
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adjective
  1. having the form or nature of air; gaseous.
  2. unsubstantial; unreal.

Origin of aeriform

First recorded in 1780–90; aeri- + -form
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

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British Dictionary definitions for aeriform

aeriform

adjective
  1. having the form of air; gaseous
  2. unsubstantial
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