Function: noun
Date: 1929
: a principle in quantum mechanics: it is impossible to discern simultaneously and with high accuracy both the position and the momentum of a particle (as an electron) ― called also Heisenberg uncertainty principle
UNCERTAINTY PRINCIPLE
Meaning of UNCERTAINTY PRINCIPLE in English
Merriam Webster Collegiate English Dictionary. Merriam Webster - Энциклопедический словарь английского языка. 2012