a. [f. L. vapōri-, stem of vapor VAPOUR sb.: see -FORM.] Vaporous.

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1860.  Ure’s Dict. Arts, etc. (ed. 5), III. 750. Steam is water in its vaporiform state.

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1876.  Page, Adv. Text-bk. Geol., i. 36. Rock-matter in a state of vaporiform incandescence.

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