Definition - That which has many syllables.

Example -
ses - qui - ped - a - li - an

Etymology -
The word entered English as the Latin phrase sesquipedalia verba, words a foot-and-a-half long, which came from Horace's Ars Poetica (from Latin sesqui, half as much again + pes, foot).

Oxford English Dictionary -
Its first citation is from 1656:
"Sesquipedalian words (verba sesquipedalia) used by Horace for great, stout, and lofty words; words that are very long, consisting of many Syllables."
(Blount, Glossographia )

Please comment