definition of
aeriform

[1] #1 aeriform s. [airlike] resembling air or having the form of air. wn

[2] #2 aeriform s. [aerial, airy, aery, ethereal] 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". wn