trichotomous
adjective
tri·chot·o·mous trī-ˈkä-tə-məs 
: divided or dividing into three parts or into threes
trichotomous branching
trichotomously adverb
Word History
Etymology
Late Greek trichotomein to trisect, from Greek tricha in three (akin to treis three) + -tomein (akin to temnein to cut) — more at three, tome
First Known Use
1800, in the meaning defined above
- bristle cell
- bristle fern
- bristle grass
- bristle rat
- bristle with
- bristle with (something)
- bristle with something
- bristle worm
- bristle-bird
- bristle-thighed curlew
- bristlecone fir
- bristlecone pine
- bristled
- bristlegrasses
- bristleless
- bristlelike
- bristles
- bristletail
- bristletails
- bristlewort
- bristlier
- bristliest
- bristliness
- bristlinesses
- bristling