• WordNet 3.6
    • adj sesquipedalian (of words) long and ponderous; having many syllables "sesquipedalian technical terms"
    • adj sesquipedalian given to the overuse of long words "sesquipedalian orators","this sesquipedalian way of saying one has no money"
    • n sesquipedalian a very long word (a foot and a half long)
    • ***
Webster's Revised Unabridged Dictionary
    • a Sesquipedalian Measuring or containing a foot and a half; as, a sesquipedalian pygmy; -- sometimes humorously applied to long words.
    • ***
Century Dictionary and Cyclopedia
    • sesquipedalian Containing or measuring a foot and a half: as, a sesquipedalian pygmy: often humorously said of long words, in translation of Horace's sesquipedalia verba (words a foot and a half long).
    • sesquipedalian Addicted to the use of long words.
    • ***
Chambers's Twentieth Century Dictionary
    • adj Sesquipedalian ses-kwi-pē-dā′li-an containing a foot and a half: often humorously said of a very long word—also Ses′quipedal
    • ***


Webster's Revised Unabridged Dictionary
Sesqui-, + pedal,: cf. F. sesquipédal, L. sesquipedalis,
Chambers's Twentieth Century Dictionary
L. sesquipedalissesqui, one-half more, pes, ped-is, a foot.


In literature:

Caesar's bridge rested on sesquipedalian beams of solid timber.
"The Awakening of China" by W.A.P. Martin
Such the twice sesquipedalian name and title of him who at this time wielded the destinies of Mexico.
"The Free Lances" by Mayne Reid
But "documentary evidence" was too sesquipedalian to submit to without a protest.
"When Ghost Meets Ghost" by William Frend De Morgan
He was indebted to a ruse of Aunt Margaret for his historic and sesquipedalian name.
"The Cave by the Beech Fork" by Henry S. Spalding
But after the sesquipedalian sentence I'd discharged at his head, for very shame's sake I couldn't ask, nor let him say.
"The Twickenham Peerage" by Richard Marsh

In news:

Sesquipedalian Spark of Right.