n. 1. a. Verse written in lines of three metrical feet. b. A single line of such verse. 2. a. Classical quantitative verse consisting of three measures of two feet each, especially in iambic, trochaic, or anapestic meter. b. A single line of such verse. [Late Latin, from Latin trimetrus, from Greek trimetros : tri-, tri- + metron, measure; see METER1.] tri·metric (trī-mĕtrĭk), tri·metri·cal (-rĭ-kəl) adj. |
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