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

C. GRAVEOLENS.—This is a dwarf shrub, with neatly tripinnate leaves, and solitary, strongly-scented yellow flowers of medium size.

From Hardy Ornamental Flowering Trees and Shrubs by Webster, Angus Duncan

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

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

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

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

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