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

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

From The Elements of Botany For Beginners and For Schools by Gray, Asa

The dense cliff brake may be described as follows: Stipes three to nine inches tall, blades one to three inches, triangular-ovate, pinnate at the summit, and tripinnate below.

From The Fern Lover's Companion A Guide for the Northeastern States and Canada by Tilton, George Henry

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

From The Elements of Botany For Beginners and For Schools by Gray, Asa

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

From The Fern Lover's Companion A Guide for the Northeastern States and Canada by Tilton, George Henry

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

From The Fern Lover's Companion A Guide for the Northeastern States and Canada by Tilton, George Henry