An Etymological Dictionary of Astronomy and Astrophysics

A nuclear or molecular process in which some of the energy of the incoming particle is absorbed by, or transferred to, the other particle.

Etymology (EN): → endo- + -ergic, a combining form with the meanings “activated by, sensitive to, releasing, resembling the effect produced by the substance or phenomenon specified by the initial element,” from → erg, → energy + → -ic;
→ process.

Etymology (PE): Farâravand, → process; kâružgir, from kâruž, → energy, + gir present stem of 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”).