tripinnate
adjective
tri·pin·nate (ˌ)trī-ˈpi-ˌnāt 
: bipinnate with each division pinnate
tripinnately adverb
Word History
First Known Use
circa 1760, in the meaning defined above
- tweezes
- tweezing
- twelfth
- Twelfth Day
- Twelfth Night
- twelfth-cake
- twelfth-night cake
- twelfther
- twelfthest
- twelfths
- Twelfthtide
- twelfthtides
- twell
- twelve
- twelve hours
- twelve-men's morris
- twelve-note
- twelve-spotted asparagus beetle
- twelve-tone
- twelve-tone row
- twelve-wired bird of paradise
- twelvefold
- twelvemo
- twelvemonth
- twelvemonths