sar·co·mere (sär k -mîr )n. One of the segments into which a fibril of striated muscle is divided. |
| sarcomere (särk-mîr) The contractile unit of a skeletal muscle fiber. Sarcomeres are divided into bands of filaments made of actin or myosin. During muscle contraction, the filaments slide over each other to cause shortening of the sarcomere. |
ThesaurusLegend: Synonyms Related Words Antonyms
| Noun | 1. | sarcomere - one of the segments into which a myofibril is divided myofibril, myofibrilla, sarcostyle - one of many contractile filaments that make up a striated muscle fiber segment - one of the parts into which something naturally divides; "a segment of an orange" |
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