hypermetrical

hy·per·met·ric

H0358900 (hī′pər-mĕt′rĭk)adj.1. Having one or more syllables in addition to those found in a standard metrical unit or line of verse.2. Being one of these additional syllables.
hy·per′me·ter (hī-pûr′mĭ-tər) n.hy′per·met′ri·cal adj.