Search Result for "uncertainty principle":
Wordnet 3.0

NOUN (1)

1. (quantum theory) the theory that it is impossible to measure both energy and time (or position and momentum) completely accurately at the same time;
[syn: uncertainty principle, indeterminacy principle]



WordNet (r) 3.0 (2006):

uncertainty principle
    n 1: (quantum theory) the theory that it is impossible to
         measure both energy and time (or position and momentum)
         completely accurately at the same time [syn: uncertainty
         principle, indeterminacy principle]