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Definition of Atomic number

Babylon English

number of protons within a nucleus
Atomic number Definition from Science & Technology Dictionaries & Glossaries
General Chemistry Glossary
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(Z) The number of protons in an atomic nucleus . The atomic number and the element symbol are two alternate ways to label an element. In nuclide symbols , the atomic number is a leading subscript; for example, in 126C, the "6" is the atomic number.
NRC Nuclear Energy Glossary
The number of positively charged protons in the nucleus of an atom.
A service to the public by The U.S. Nuclear Regulatory Commission (NRC).
Technical English by wpv
The number of protons found in the nucleus of an atom, of an element.
The number of protons in a nucleus. It determines the chemical properties of an element.
ASTRONOMY UNBOUND
The number of protons in an atomic nucleus. It is usually denoted by the letter Z. See also atomic mass number.
Atomic number Definition from Computer & Internet Dictionaries & Glossaries
Integrated Circuit Terminology
the number of protons and electrons in an atom of a specific element in the ground state.
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Atomic number Definition from Encyclopedia Dictionaries & Glossaries
English Wikipedia - The Free Encyclopedia
In chemistry and physics, the atomic number of a chemical element (also known as its proton number) is the number of protons found in the nucleus of an atom of that element, and therefore identical to the charge number of the nucleus. It is conventionally represented by the symbol Z. The atomic number uniquely identifies a chemical element. In an uncharged atom, the atomic number is also equal to the number of electrons.

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Atomic number Definition from Society & Culture Dictionaries & Glossaries
Environmental Engineering (English ver.)
A specific number that differs for each element, equal to the number of protons in the nucleus of each of its atoms.
Atomic number Definition from Entertainment & Music Dictionaries & Glossaries
English to Federation-Standard Golic Vulcan
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Atomic number Definition from Medicine Dictionaries & Glossaries
CDC Radiological Terms
the total number of protons in the nucleus of an atom.
  
Source: Centers for Disease Control and Prevention (CDC) ( About )