trimeter

[ trim-i-ter ]

/ ˈtrɪm ɪ tər /

Prosody

a verse of three measures or feet.

consisting of three measures or feet.

Classical Prosody. composed of six feet or three dipodies.

Origin of trimeter

1560–70; < Latin trimetrus having three measures < Greek trímetros. See tri-, meter²

Trimeter, trim′e-tėr, n. a division of a verse consisting of three measures.

Chambers's Twentieth Century Dictionary (part 4 of 4: S-Z and supplements) |Various
It is doubtful whether even the great Tragic poets could have made the trimeter tolerable as the vehicle of a long story.

The Flourishing of Romance and the Rise of Allegory |George Saintsbury
The common-meter stanza contains four iambic lines, the first and third being tetrameter, and the second and fourth trimeter.

Elementary Guide to Literary Criticism |F. V. N. Painter
The trimeter iambic is a foot longer than our heroic measure.

Blackwoods Edinburgh Magazine, Volume 59, No. 366, April, 1846 |Various

A stanza made up of tetrameter alternating with trimeter is very common.

English: Composition and Literature |W. F. (William Franklin) Webster

trimeter

/ (ˈtrɪmɪtə) prosody /

a verse line consisting of three metrical feet

designating such a line