| 释义 |
WordReference Random House Unabridged Dictionary of American English © 2024rar•e•fac•tion (râr′ə fak′shən),USA pronunciation n. - Physicsthe act or process of rarefying.
- Physicsthe state of being rarefied.
- Medieval Latin rārēfactiōn- (stem of rārēfactiō), equivalent. to Latin rārēfact(us) (past participle of rārēfacere; see rarefy) + -iōn- -ion
- 1595–1605;
rar′e•fac′tion•al, adj. rar•e•fac•tive (râr′ə fak′tiv),USA pronunciation adj. |