Middle English Dictionary Entry

vā̆pǒur n.
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Entry Info

Definitions (Senses and Subsenses)

(a) A moist substance arising from matter that has been heated; steam; (b) water vapor drawn up naturally from the earth by the heat of the sun, forming mist, clouds, or precipitation; also, one of the forms taken by water vapor; water ~; (c) hot air; also, a mass of hot air believed to be the cause of lightning if drawn into the atmosphere or of pressure if held within the earth.
Smoke produced by a burning substance; fumes from incense or balm; also used fig. as a type of something ephemeral; ~ of smoke.
An odorous exhalation, a scent carried in the air.
Physiol. Gas generated in the body, often with a debilitating effect upon the stomach, brain, or other organs; a gaseous substance formed within the body and often released through the pores or exhaled by the lungs.
Influence, emanation.

Supplemental Materials (draft)

Note: Med., etc., see further J.Norri, Dictionary of Medical Vocabulary, s.v. vapour.