IPA: //haɪpərˈmɛtrɪk//
KK: /haɪpərˈmɛtrɪk/
Referring to a type of verse or meter that includes extra syllables beyond the usual count in a line of poetry.
The poem was written in a hypermetric style, adding an extra syllable to each line.
Hypermetric is formed from "hyper-" (meaning over or beyond) and "metric" (from Greek "metron", meaning measure). The word describes a form of verse that exceeds the normal measure or rhythm.
Think of 'hyper-' meaning 'over' and 'metric' relating to 'measure' — this helps you remember that hypermetric refers to a measure that goes beyond the usual.