polimetrum
pɒˈlɪmɛtrəm
Definitions
1. noun
A poem with four or more stanzas, each stanza consisting of a different number of lines
“The professor taught the class about various forms of poetry, including the polimetrum, which she had written as a student.”
2. noun
A metrical form consisting of a sequence of stanzas with different numbers of lines, often in a specific pattern
“The poet’s use of the polimetrum in her latest collection was a deliberate choice to push the boundaries of traditional poetry.”