Result from Foreign Dictionaries (3 entries found)
From The Collaborative International Dictionary of English v.0.48 [gcide]:
Rarefy \Rar"e*fy\ (r[a^]r"[-e]*f[imac]; 277), v. t. [imp. & p.
p. {Rarefied} (r[a^]r"[-e]*f[imac]d); p. pr. & vb. n.
{Rarefying} (r[a^]r"[-e]*f[imac]`[i^]ng).] [F. rar['e]fier;
L. rarus rare + -ficare (in comp.) to make; cf. L.
rarefacere. See {-fy}.]
To make rare, thin, porous, or less dense; to expand or
enlarge without adding any new portion of matter to; --
opposed to condense.
[1913 Webster]
From The Collaborative International Dictionary of English v.0.48 [gcide]:
Rarefy \Rar"e*fy\, v. i.
To become less dense; to become thin and porous. "Earth
rarefies to dew." --Dryden.
[1913 Webster]
From WordNet (r) 3.0 (2006) [wn]:
rarefy
v 1: lessen the density or solidity of; "The bones are rarefied"
2: make more subtle or refined [syn: {rarefy}, {sublimate},
{subtilize}]
3: weaken the consistency of (a chemical substance) [syn:
{rarefy}, {attenuate}]
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