hy·per·met·ric 
(hī′pər-mĕtrĭk)
(hī′pər-mĕtrĭk)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·perme·ter (hī-pûrmĭ-tər) n.
hy′per·metri·cal adj.