15 letters · 29 points in Scrabble
noun (prosody) a line of poetry having an extra syllable or syllables at the end of the last metrical foot
adjective (verse) having an extra syllable or syllables at the end of a metrically complete verse or in a metrical foot
originRecorded from circa 1700; from Latin hypercatalēcticus, from Ancient Greek ὑπερκατάληκτος (huperkatálēktos).
Etymology from Wiktionary, CC BY-SA 3.0