rarefy

English

Alternative forms

• rarify

Etymology

rare +‎ -fy

Verb

rarefy (third-person singular simple present rarefies, present participle rarefying, simple past and past participle rarefied)

1. To make rare, thin, porous, or less dense
2. To expand or enlarge without adding any new portion of matter to.

Synonyms

• stretch

Antonyms

• condense