Definitions

from The American Heritage® Dictionary of the English Language, 5th Edition.

  • noun A segmental mass of mesoderm in a vertebrate embryo that differentiates into skeletal muscle.
  • noun A muscle or group of muscles derived from one somite and innervated by a single segment of a spinal nerve.
  • noun A knife for dividing muscle during surgery.

from The Century Dictionary.

  • noun A muscular segment or metamere; a myocomma. See cut under Pharyngobranchii.
  • noun An instrument for dividing a muscle.

from the GNU version of the Collaborative International Dictionary of English.

  • noun A muscular segment; one of the zones into which the muscles of the trunk, especially in fishes, are divided; a myocomma.
  • noun One of the embryonic muscular segments arising from the protovertebræ; also, one of the protovertebræ themselves.
  • noun The muscular system of one metamere of an articulate.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

  • noun biology In vertebrate embryonic development, a group of tissues formed from somites that develop into the body wall muscle.

Etymologies

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