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neutrino

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neu⋅tri⋅no

[noo-tree-noh, nyoo-]
–noun, plural -nos. Physics.
any of the massless or nearly massless electrically neutral leptons. There is a distinct kind of neutrino associated with each of the massive leptons.


Origin:
< It (1933), equiv. to neutr(o) neuter, neutral + -ino -ine 2 ; coined by E. Fermi
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2009.
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neu·tri·no   (nōō-trē'nō, nyōō-)   
n.   pl. neu·tri·nos
Any of three electrically neutral subatomic particles in the lepton family. See Table at subatomic particle.

[Italian, from neutro, neuter, from Latin neuter, neutr-; see neuter.]
The American Heritage® Dictionary of the English Language, Fourth Edition
Copyright © 2009 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
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Cultural Dictionary

neutrino [(nooh-tree-noh)]

An electrically neutral particle that is often emitted in the process of radioactive decay of nuclei. Neutrinos are difficult to detect, and their existence was postulated twenty years before the first one was actually discovered in the laboratory. Millions of neutrinos produced by nuclear reactions in the sun pass through your body every second without disturbing any atoms.

The American Heritage® New Dictionary of Cultural Literacy, Third Edition
Copyright © 2005 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
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Word Origin & History

neutrino 
1934, from It. neutrino, coined 1933 by It. physicist Enrico Fermi (1901-54) from neutro "neuter" + -ino, dim. suffix.
Online Etymology Dictionary, © 2001 Douglas Harper
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Medical Dictionary

Main Entry: neu·tri·no
Pronunciation: n(y)ü-'trE-(")nO
Function: noun
Inflected Form: plural -nos
: an unchargedelementary particle that is believed to be massless or to have a very small mass, that has any of three forms, and that interacts only rarely with other particles
Merriam-Webster's Medical Dictionary, © 2002 Merriam-Webster, Inc.
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Medical Dictionary

neutrino neu·tri·no (n&oomacr;-trē'nō, ny&oomacr;-)
n. pl. neu·tri·nos
Any of three electrically neutral subatomic particles in the lepton family.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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