aeriform

adjective

aer·​i·​form

ˈer-ə-ˌfȯrm

1

: having the nature of air : gaseous

2

: lacking substance or real existence : intangible

figures light and aeriform come unlooked for and melt away

—Thomas Carlyle

Word History

Etymology

aer- + -iform

First Known Use

1781, in the meaning defined at sense 1

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