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neutron

UK:^*^*UK and possibly other pronunciationsUK and possibly other pronunciations/ˈnjuːtrɒn/US:USA pronunciation: IPA and respellingUSA pronunciation: IPA/ˈnutrɑn, ˈnju-/ ,USA pronunciation: respelling(no̅o̅′tron, nyo̅o̅′-)

neu•tron /ˈnutrɑn, ˈnyu-/USA pronunciation n. [countable]

Physicsa particle found in the nucleus of most atoms, having no charge, and a mass slightly greater than that of a proton.

neu•tron (no̅o̅′tron, nyo̅o̅′-),USA pronunciation n. [Physics.]

Physicsan elementary particle having no charge, mass slightly greater than that of a proton, and spin of ½: a constituent of the nuclei of all atoms except those of hydrogen. Symbol: n

neutr(o)- + -on¹ 1920–25

Collins Concise English Dictionary © HarperCollins Publishers::

neutron /ˈnjuːtrɒn/ n

a neutral elementary particle with a rest mass of 1.674 92716 × 10^–27 kilogram and spin ½; classified as a baryon. In the nucleus of an atom it is stable, but when free it decays

Etymology: 20th Century: from neutral, on the model of electron

'neutron' also found in these entries (note: many are not synonyms or translations):

actinium - Alvarez - boron - cadmium - Chadwick - chain reaction - Chandrasekhar limit - collapsar - degenerate matter - deuteron - dysprosium - enhanced radiation weapon - fermium - flux - hafnium - magnetar - n - neutrino - neutron bomb - neutron gun - neutron number - neutron star - nucleon - plutonium - protactinium - pulsar - samarium - star - X-ray binary - zirconium - activation analysis - antineutron - baryon - control rod - delayed - gravitational collapse - magic number - N, n - N-bomb - neptunium - neutron activation analysis - on - photoneutron - radiative capture - uranium 239 - slow neutron - supernova

In Lists: Physics terms, Chemistry, more...

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neutron