Tetrameter n. (GR. & Latin Pros.) A verse or line consisting of four measures, that is, in iambic, trochaic, and anapestic verse, of eight feet; in other kinds of verse, of four feet.
...tetrameter catalectic [breve macron breve] | [breve macron breve] | [breve macron breve] ... — The Complete Poetical Works of Samuel Taylor Coleridge - Vol I and II • Samuel Taylor Coleridge