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or tripinnated

[trahy-pin-eyt] /traɪˈpɪn eɪt/
adjective, Botany.
bipinnate, as a leaf, with the divisions also pinnate.
Origin of tripinnate
1750-60; tri- + pinnate
Related forms
tripinnately, adverb Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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Examples from the Web for tripinnate
Historical Examples
  • Pinnule, a secondary division of a bipinnate or tripinnate leaf, 66.

  • Pinna, a primary division with its leaflets of a bipinnate or tripinnate leaf.

  • Fronds eight to eighteen inches long, lanceolate-oblong, tripinnate.

    The Fern Lover's Companion George Henry Tilton
  • When these leaflets are again divided in the same way, the leaf becomes thrice pinnate, or tripinnate, as in many Acacias.

British Dictionary definitions for tripinnate


/traɪˈpɪnɪt; -eɪt/
(of a bipinnate leaf) having the pinnules themselves pinnate
Derived Forms
tripinnately, adverb
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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