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1. (Chemistry) having the form of air; gaseous
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|Adj.||1.||aeriform - resembling air or having the form of air|
gaseous - existing as or having characteristics of a gas; "steam is water is the gaseous state"
|2.||aeriform - characterized by lightness and insubstantiality; as impalpable or intangible as air; "figures light and aeriform come unlooked for and melt away"- Thomas Carlyle; "aerial fancies"; "an airy apparition"; "physical rather than ethereal forms"|