Definition of "polysyllable" []

• A word of more than three syllables. (noun)

American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

• "He spoke in sentences that clocked in at a grade-school level, the speed of delivery was lugubrious, or perhaps aimed at the part of the audience that processes the occasional polysyllable rather slowly."
• "They belong in the category because they contain polysyllable words and can be slightly harder to read and follow."
• "Right alongside of this are vocabulary choices – go with the polysyllable or the Anglo-Saxon four letter version?"