rarefy

1. 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. Source: opted

2. v. i. To become less dense; to become thin and porous. Source: opted

3. v. lessen the density or solidity of Source: wordnet

4. v. make more subtle or refined Source: wordnet

5. v. weaken the consistency of (a chemical substance) Source: wordnet

6. To make rare, thin, porous, or less dense; to expand or enlarge without adding any new portion of matter to; -- opposed to condense. To become less dense; to become thin and porous. "Earth rarefies to dew." Dryden. Source: webster

7. To make rare, thin, porous, or less dense; to expand or enlargewithout adding any new portion of matter to; -- opposed to condense. Source: adambom

8. v:100 v. lessen the density or solidity of v. make more subtle or refined v. weaken the consistency of (a chemical substance) Source: ecdict

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