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Houghton Mifflin

pinnate
(click for a larger image)
pinnate
top: simple pinnate leaf
bottom: bipinnate leaf
pin·nate  audio  (pnt) KEY  also pin·nat·ed  (-td) KEY 

ADJECTIVE:
Resembling a feather; having parts or branches arranged on each side of a common axis: a polyp with a pinnate form; pinnate leaves.

ETYMOLOGY:
Latin pinntus, feathered, from pinna, feather; see pet- in Indo-European roots

OTHER FORMS:
pinnately(Adverb)



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