| 释义 |
WordReference Random House Unabridged Dictionary of American English © 2024rar•e•fy (râr′ə fī′),USA pronunciation v., -fied, -fy•ing. v.t. - Chemistry, Physicsto make rare or rarer;
make less dense:to rarefy a gas. - to make more refined, spiritual, or exalted.
v.i. - Physicsto become rare or less dense;
become thinned:Moisture rarefies when heated.
- Latin rārēfacere, equivalent. to rārē-, combining form of rārus rare1 (for expected rāri-; origin, originally of -ē- unclear) + facere to make; see -fy
- Middle French rarefier
- Middle English rarefien 1350–1400
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