An Etymological Dictionary of Astronomy and Astrophysics

1. A machine for converting one form of energy into another.
   

2. Geometry: That which creates a line, a surface, a solid by its motion.

Etymology (EN): From L. generator “producer,” from genera(re)→ generate + -tor a suffix forming personal agent nouns from verbs and, less commonly, from nouns.

Etymology (PE): Âzângar, from âzân the stem of âzânidan→ generate

• -gar suffix of agent nouns, from kar-, kardan “to do, to make” (Mid.Pers. kardan; O.Pers./Av. kar- “to do, make, build,” Av. kərənaoiti “makes;” cf. Skt. kr- “to do, to make,” krnoti “makes,” karma “act, deed;” PIE base k^wer- “to do, to make”).