tripinnate

American  

[trahy-pin-eyt] / traɪˈpɪn eɪt /

Often tripinnated

adjective

Botany.

1. bipinnate, as a leaf, with the divisions also pinnate.

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tripinnate British  

/ -eɪt, traɪˈpɪnɪt /

adjective

1. (of a bipinnate leaf) having the pinnules themselves pinnate

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Other Word Forms

• tripinnately adverb

Etymology

Origin of tripinnate

First recorded in 1750–60; tri- + pinnate

Example Sentences

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

From Project Gutenberg

Fronds two to six inches long, triangular-ovate, acute, broadest at the base, tripinnate.

From Project Gutenberg

From a systematic point of view these leaves indicate the origin of the water-parsnips from ordinary umbellifers, which generally have bi- and tripinnate leaves.

From Project Gutenberg

Pinnule, a secondary division of a bipinnate or tripinnate leaf, 66.

From Project Gutenberg

A more highly developed form of the typical plant, the lower pinnæ being often very broad, and the fronds tripinnate.

From Project Gutenberg