Index of English words, starting with "ra"

(1) - Rarefied (imp. & p. p.) of Rarefy

(1) - Rarefy (v. i.) To become less dense; to become thin and porous.
(2) - Rarefy (v. t.) To make rare, thin, porous, or less dense; to expand or enlarge without adding any new portion of matter to; -- opposed to condense.

(1) - Rarely (adv.) Finely; excellently; with rare skill. See 3d Rare, 2.
(2) - Rarely (adv.) In a rare manner or degree; seldom; not often; as, things rarely seen.

(1) - Rareness (n.) The state or quality of being rare.