bipinnate

American  

[bahy-pin-eyt] / baɪˈpɪn eɪt /

adjective

Botany.

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

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bipinnate British  

/ baɪˈpɪnˌeɪt /

adjective

1. (of pinnate leaves) having the leaflets themselves divided into smaller leaflets

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bipinnate Scientific  

/ bī-pĭn′āt′ /

1. Relating to compound leaves that grow opposite each other on a larger stem; twice-compound or twice-pinnate. Bipinnate leaves have a feathery appearance. The acacia, coffeetree, and silktree have bipinnate leaves.

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Other Word Forms

• bipinnately adverb

Etymology

Origin of bipinnate

From the New Latin word bipinnātus, dating back to 1785–95; see bi- ¹, pinnate

Example Sentences

“There were two options: You move the house, or the tree dies,” says Duprat, 69, on a temperate afternoon this past August, standing beneath its delicate bipinnate leaves.

From New York Times • Mar. 22, 2024

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 leaves are bipinnate, leaflets wedge-shape, trifoliate, and glaucous; the foliage very dense, having a pretty drooping habit.

From Hardy Perennials and Old Fashioned Flowers Describing the Most Desirable Plants, for Borders, Rockeries, and Shrubberies. by Wood, John

The Cyclopterus Hibernicus, as shown both by the Prestonhaugh specimen and those of Ireland, was a bipinnate fern of very considerable size,—probably a tree fern.

From The Testimony of the Rocks or, Geology in Its Bearings on the Two Theologies, Natural and Revealed by Miller, Hugh

Fronds bipinnate, one to three feet high, widest near the middle.

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