Biform is a 6 letter English word. It's valid Scrabble word worth 13 points. It's valid Words with friends word worth 15 points.
You can make 95 anagrams from letters in biform (bfimor).
1810-20; Latin biformis, equivalent to bi- bi-1 + form(a) form + -is adj. suffix
The biform hypoderm is not always obvious (clausa, Banksiana, etc.) where in some leaves there is but one row of cells.