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positive reinforcing stimulus
Positive rotation
Positive sign
positive stimulus
positive thigmotaxis
Positive-tilt Trough
Positively
positively charged
Positiveness
positivism
positivist
positivistic
positivistically
Positivity
positron emission tomography
positron emission tomography scanner
positron-emission tomography
positronium
Positure
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posole
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poss
posse

positron definitions

WordNet (r) 3.0 (2005)

n
1: an elementary particle with positive charge; interaction of a positron and an electron results in annihilation [syn: positron, antielectron]

Merriam Webster's

noun Etymology: positive + -tron (as in electron) Date: 1933 a positively charged particle having the same mass and magnitude of charge as the electron and constituting the antiparticle of the electron called also antielectron

Oxford Reference Dictionary

n. Physics an elementary particle with a positive charge equal to the negative charge of an electron and having the same mass as an electron. Etymology: POSITIVE + -TRON



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