bipinnate

American  

[bahy-pin-eyt] / baɪˈpɪn eɪt /

adjective

Botany.

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

---

bipinnate British  

/ baɪˈpɪnˌeɪt /

adjective

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

---

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.

---

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

See Examples For:

bipinnate

“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

The fertile fronds shorter, closely bipinnate with the pinnules rolled up into berry-like structures which contain the spore cases.

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

Fronds pale green, one to six feet high; sterile part bipinnate, each pinna having numerous pairs of lance-oblong, serrulate pinnules alternate along the midrib.

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

Nearly 300 species are Australian or Polynesian, and have terete or vertically compressed leaf stalks, instead of the bipinnate leaves of the much fewer species of America, Africa, etc.

From Webster's Unabridged Dictionary by Webster, Noah