Sphincter: Definition and part of speech

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Sphincter

  1. a. Of, pertaining to, or designating, a sphincter; as, a sphincter muscle.
  2. n. A muscle which surrounds, and by its contraction tends to close, a natural opening; as, the sphincter of the bladder.

The word meanings were obtained from OPTED(The Online Plain Text English Dictionary), which is based on “The Project Gutenberg Etext of Webster’s Unabridged Dictionary” which is in turn based on the 1913 US Webster’s Unabridged Dictionary (See Project Gutenburg), as a text file.

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