'Pair production' definitions:
Definition of 'pair production'
From: WordNet
noun
The transformation of a gamma-ray photon into an electron and a positron when the photon passes close to an atomic nucleus [syn: pair production, pair creation, pair formation]
Definition of 'Pair production'
From: GCIDE
- Pair production \Pair" pro*duc"tion\ (Physics) The simultaneous creation of a particle and its antiparticle, such as an electron and positron, from a photon; -- usually due to its interaction with the strong field near a nucleus. [PJC]