Definition of mesomere in English:

mesomere

Pronunciation /ˌmɛsə(ʊ)mɪə/

noun

  • 1Zoology
    Each of a series of axial elements in the primitive vertebrate fin (archipterygium) or forelimb.

  • 2Embryology
    A mesodermal segment or somite; a protovertebra.

  • 3Embryology
    A blastomere of medium size, produced by some forms of embryonic cleavage. Compare macromere , micromere .

Origin

Late 19th century; earliest use found in Thomas Huxley (1825–1895), biologist and science educationist. From meso- + -mere.