A verse form of Italian origin, perhaps invented by Dante, consisting of three-line stanzas (tercets) in which the middle line of one tercet rhymes with the first and third lines of the following tercet. The rhyme scheme looks like this: aba bcb cdc, etc. A poem in terza rima can be of any length and in any meter. The final stanza of the poem can be a single line, a couplet, or a tercet, but it must rhyme with the middle line of the previous stanza. A "Terza Rima Sonnet" is a poem consisting of four tercets and a couplet in terza rima form.