extrametrical: Meaning and Definition of

ex•tra•met•ri•cal

Pronunciation: (ek"stru-me'tri-kul), [key]
— adj. Pros.
  1. containing one or more syllables in addition to those required by the meter: an extrametrical line.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.