An Etymological Dictionary of Astronomy and Astrophysics

General:To make larger, greater, or more powerful.
Physics:To increase the amplitude of an input signal.

Etymology (EN): From M.F. amplifier, from L. amplificare “to increase, augmant,” from L. amplus “wide, large.”

Etymology (PE): Dâmané, → amplitude; dâdan “to give” (Mid.Pers. dâdan “to give,” O.Pers./Av. dā- “to give, grant, yield,” dadāiti “he gives;” Skt. dadáti “he gives,” Gk. didomi “I give,” tithenai “to put, set, place;” L. dare “to give, offer;” Rus. delat “to do;” O.H.G. tuon, Ger. tun, O.E. don “to do”); gereftan
“to take, seize, catch,” (Mid.Pers. griftan, Av./O.Pers. grab- “to take, seize,” cf.
Skt. grah-, grabh- “to seize, take,” graha “seizing, holding, perceiving,” M.L.G. grabben “to grab,” from P.Gmc. *grab, E. grab “to take or grasp suddenly;” PIE base *ghrebh- “to seize”).