Definition for THIN

THIN, v.t. [Sax. thinnian; Russ. tonyu; L. tenuo. See Attenuate.]

  1. To make thin; to make rare or less thick; to attenuate; as, to thin the blood.
  2. To make less close, crowded or numerous; as, to thin the ranks of an enemy; to thin the trees or shrubs of a thicket.
  3. To attenuate; to rarefy; to make less dense; as, to thin the air; to thin the vapors. Thin out, in geology: when strata diminish in thickness until they disappear, they are said to thin out.

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