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1. Having more than two and usually more than three syllables.
2. Characterized by words having more than three syllables.

pol′y·syl·lab′i·cal·ly adv.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
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Adv.1.polysyllabically - in a polysyllabic manner
Based on WordNet 3.0, Farlex clipart collection. © 2003-2012 Princeton University, Farlex Inc.
References in periodicals archive ?
How socially significant is it to opine polysyllabically about the need to expand "the canon" when only the wealthiest boys and girls in this country have any awareness of--and thus any access to--music within any canon except the most commercial?
Last July 12, he himself announced that he was going into the hospital for "tests and analyses." Three days later, he had a four-hour operation that was fully and polysyllabically reported upon.