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np

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Np

Physics.
neper; nepers.

Np

Symbol, Chemistry.
neptunium.

N.P.

1. new paragraph.
2. nisi prius.
3. no protest.
4. notary public.

n.p.

1. net proceeds.
2. new paragraph.
3. nisi prius.
4. no pagination.
5. no place of publication.
6. no protest.
7. notary public.

ne⋅per

[nee-per, ney-]
–noun Physics.
the unit used to express the ratio of two amplitudes as a natural logarithm: equal to 8.68 dB. Abbreviation: Np
Also, napier.


Origin:
1920–25; after J. Neper; see Napier

nurse-prac⋅ti⋅tion⋅er

[nurs-prak-tish-uh-ner]
–noun
a registered nurse who has received special training for diagnosing and treating routine or minor ailments. Abbreviation: NP
Also, nurse practitioner.
Also called nurse-clinician.


Origin:
1975–80
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2009.
Cite This Source Link To np
nep·tu·ni·um   (něp-tōō'nē-əm, -tyōō'-)   
n.   Symbol Np
A silvery, metallic, naturally radioactive element, atomic number 93, the first of the transuranium elements. Its longest-lived isotope is Np-237 with a half-life of 2.1 million years. Found in trace quantities in uranium ores, it is produced synthetically by nuclear reactions. See Table at element.

[After the planet Neptune (from the fact that it follows uranium in the periodic table).]
notary public  
n.   pl. notaries public Abbr. NP
A person legally empowered to witness and certify the validity of documents and to take affidavits and depositions.
noun phrase  
n.   Abbr. NP
A phrase whose head is a noun, as our favorite restaurant.
Np  
The symbol for the element neptunium.
NP  
abbr.  
  1. neuropsychiatry

  2. notary public

  3. noun phrase

  4. nurse practitioner

nurse practitioner  
n.   Abbr. NP
A registered nurse with special training for providing primary health care, including many tasks customarily performed by a physician.
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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Slang Dictionary
No problem

  1. phr.
    and No prob; NP. All is well.; There is no problem, so don't worry or fret. (Often said after someone else says I'm sorry.) A: Gee! I'm sorry! B: No prob. : No problem. I can do it easily.
  2. phr.
    you are welcome. (Sometimes said after someone else says thank you.) A: Thanks a lot. B: No problem. :
Dictionary of American Slang and Colloquial Expressions by Richard A. Spears.Fourth Edition.
Copyright 2007. Published by McGraw Hill.
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Medical Dictionary

Main Entry: Np
Function: symbol
neptunium

Main Entry: NP
Function: abbreviation
1 neuropsychiatric; neuropsychiatry
2 nurse practitioner
Merriam-Webster's Medical Dictionary, © 2002 Merriam-Webster, Inc.
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Medical Dictionary

Np
The symbol for the element neptunium.

NP abbr.
nurse practitioner neuropsychiatry

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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Science Dictionary
neptunium   (něp-t'nē-əm)  Pronunciation Key 
Symbol Np
A silvery, radioactive metallic element of the actinide series. It occurs naturally in minute amounts in uranium ores and is produced artificially as a byproduct of plutonium production. Its longest-lived isotope is Np 237 with a half-life of 2.1 million years. Atomic number 93. See Periodic Table.
Np  
The symbol for neptunium.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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Computing Dictionary

NP complexity
nondeterministic polynomial time.
[The Jargon File]

np networking
The country code for Nepal.
(1999-01-27)

The Free On-line Dictionary of Computing, © 1993-2007 Denis Howe
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Abbreviations & Acronyms
Np
neptunium
NP
  1. neuropsychiatry

  2. notary public

  3. not palpable

  4. noun phrase

  5. number of pitches

  6. nurse practitioner

The American Heritage® Abbreviations Dictionary, Third Edition
Copyright © 2005 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
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Encyclopedia

Np

radioactive chemical element of the actinoid series of the periodic table, first transuranium element to be artificially produced, atomic number 93. Though traces of neptunium have subsequently been found in nature, where it is not primeval but produced by neutron-induced transmutation reactions in uranium ores, Edwin M. McMillan and Philip H. Abelson first found neptunium in 1940 after uranium had been bombarded by neutrons from the cyclotron at Berkeley, Calif. Neptunium has been produced in weighable amounts in breeder reactors as a by-product of plutonium production from uranium-238 (about one part neptunium is produced for every 1,000 parts plutonium). All neptunium isotopes are radioactive; the stablest is neptunium-237, with a half-life of 2,140,000 years, and among the most unstable is neptunium-232, with a half-life of 13 minutes.

Learn more about Np with a free trial on Britannica.com.

Encyclopedia Britannica, 2008. Encyclopedia Britannica Online.
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