(of a bipinnate leaf) having the pinnules themselves pinnate
Derived forms
tripinnately (triˈpinnately)
adverb
tripinnate in American English
(traɪˈpɪneɪt)
adjective
Botany
bipinnate with each division pinnate, as some fern leaves
Derived forms
tripinnately (triˈpinnately)
adverb
tripinnate in American English
(traiˈpɪneit)
adjective
Botany
bipinnate, as a leaf, with the divisions also pinnate
Also: tripinnated
Derived forms
tripinnately
adverb
Word origin
[1750–60; tri- + pinnate]This word is first recorded in the period 1750–60. Other words that entered Englishat around the same time include: Yankee, infiltrate, permeability, quartz, swishtri- is a combining form meaning “three,” used in the formation of compound words. Otherwords that use the affix tri- include: triathlon, triforium, triglyceride, trinomial, trivial