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Webster 1913 Edition

(răr′ē̍-fī; 277)

Verb.

[

imp. & p. p.

Rarefied

(răr′ē̍-fīd)

;

p. pr. & vb. n.

Rarefying

(răr′ē̍-fīˊĭng)

[F.

raréfier

; L.

rarus

rare +

-ficare

(in comp.) to make; cf. L.

rarefacere

. See

To make rare, thin, porous, or less dense; to expand or enlarge without adding any new portion of matter to; – opposed to condense.

Verb.

To become less dense; to become thin and porous.

“Earth rarefies to dew.”

Dryden.

Verb.

[L. rarefacio; rarus, rare, and facio, to make.]

To make thin and porous or less dense; to expand or enlarge a body without adding to it any new portion of its own matter; opposed to condense.

Verb.

To become thin and porous.