(mineralogy) A mineral with the chemical formula Ca₂(Al,Fe⁺⁺⁺)₂O₅, found in metamorphosed limestone.

(organic chemistry) A pesticide synergist which increases the potency of other ingredients; a semisynthetic derivative of safrole that is used to enhance the potency of certain pesticides.

(mineralogy) A banded form of hematite

A surname from Arabic.