(chemistry) A round-bottomed flask with a long neck (used especially for distillation) / The head of a bolt.

(photography) A system of three (not five) mirrors used as a cheaper substitute to a pentaprism in the viewfinders of some single-lens reflex cameras

simple past tense and past participle of devictimize

(control engineering) A mathematical model of a physical system as a set of input, output and state variables related by first-order differential equations.