Third-person singular simple present indicative form of pass for

A biologist or physicist whose speciality is biophysics.

(biochemistry) Any reagent (especially an enzyme) of biological origin / (biochemistry) Any reagent used in biochemistry

(mineralogy) A monoclinic-prismatic reddish brown mineral containing hydrogen, iron, lithium, magnesium, manganese, oxygen, potassium, silicon, sodium, and vanadium.