• Webster's Revised Unabridged Dictionary
    • n Merosome (Zoöl) One of the serial segments, or metameres, of which the bodies of vertebrate and articulate animals are composed.
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Century Dictionary and Cyclopedia
    • n merosome In zoöl., one of the definite successive parts or segments of which the body is composed; ametamere; a somite. Thus, one of the rays of a starfish, or one of the rings of a worm or crustacean, is a merosome.
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Chambers's Twentieth Century Dictionary
    • n Merosome mer′ō-sōm one of the serial segments of which a body is composed, as the ring of a worm, a metamere, a somite.
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Webster's Revised Unabridged Dictionary
Gr. me`ros part + -some, body