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muscle cell-an elongated contractile cell that forms the muscles of the body. muscle fiber, muscle fibre. fibre, fiber-any of several elongated, threadlike cells (especially a muscle fiber or a nerve fiber).
Synonyms: muscle cell; muscle fiber; muscle fibre. Hypernyms (muscle fiber is a kind of...): somatic cell; vegetative cell (any of the cells of a plant or animal except the reproductive cells; a cell that does not participate in the production of gametes).Hyponyms (each of the following is a kind of muscle fiber):uscle cell; muscle fiber; muscle fibre. Hypernyms (muscle fiber is a kind of...): somatic cell; vegetative cell (any of the cells of a plant or animal except the reproductive cells; a cell that does not participate in the production of gametes). Hyponyms (each of the following is a kind of muscle fiber):