Composed of two layers of cells

(physics) Describing reflection of a ray from an object both directly back to the origin of the ray, and also at an angle

(organic chemistry) Any compound having two triazole rings

plural of bistriazole

(anatomy, botany) Composed of two cell layers.

(chemistry) Any compound having two triflate groups

(mathematics) doubly stochastic

Any of several perennial herbs, classified in genera Bistorta, Persicaria, or Polygonum, having spikes of pink flowers.

plural of bistort

Bistorta officinalis (syn. Persicaria bistorta), Easter giant