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Related to rational number: real number, irrational number

number

 [num´ber]
a symbol, as a figure or word, expressive of a certain value or a specified quantity determined by count.
atomic number (Z) a number expressive of the number of protons in an atomic nucleus, or the positive charge of the nucleus expressed in terms of the electronic charge.
Avogadro's number (N) (NA) the number of molecules in one mole of a substance: 6.023 × 1023. Called also Avogadro's constant.
CT number the density assigned to a voxel in a CAT scan on an arbitrary scale on which air has a density −1000; water, 0; and compact bone +1000. See also hounsfield unit.
mass number (A) the number of nucleons (protons plus neutrons) in the atom of a nuclide; generally indicated by a superscript preceding the symbol of a chemical element (e.g., 131I), denoting a specific isotope.
oxidation number a number assigned to each atom in a molecule or ion that represents the number of electrons theoretically gained (positive oxidation numbers) or lost (negative numbers) in converting the atom to the elemental form.

num·ber

(nŭm'bĕr),
1. A symbol expressive of a certain value or of a specific quantity determined by count.
2. The place of any unit in a series.

number

/num·ber/ (num´ber) a symbol, as a figure or word, expressive of a certain value or a specified quantity determined by count.
atomic number  (Z ) a number expressive of the number of protons in an atomic nucleus.
Avogadro's number  (N ) (N A) the number of molecules in one mole of a substance: 6.023 × 1023.
mass number  (A ) the number expressive of the mass of a nucleus, being the total number of protons and neutrons in the nucleus of an atom or nuclide.
oxidation number  a number assigned to each atom in a molecule or ion that represents the number of electrons theoretically lost (negative numbers) or gained (positive numbers) in converting the atom to the elemental form (which has an oxidation number of zero). The sum of the oxidation numbers for all atoms in a neutral compound is zero; for polyatomic ions, it is equal to the ionic charge.
tooth number  a number assigned for each of the permanent teeth in consecutive order, with 1 for the upper right third molar and 17 for the lower left third molar, and proceeding around each jaw.
turnover number  the number of molecules of substrate acted upon by one molecule of enzyme per minute.

number

Drug slang
A regional term for marijuana cigarette (joint).

Vox populi
A symbol of a value.

number

Vox populi A symbol of a value. See Accession number, Burst number, CLIA number, Common account number, Copy number, ID number, Linkage number, Magic number, Mass number, Medicare Indentification number, IP number, MIM number, Primary accession number, Reynolds' number, Secondary accession number, Threshold number, UPIN number, Winding number, Writhe number.

num·ber

(nŭm'bĕr)
1. A symbol expressive of a certain value or of a specific quantity determined by count.
2. The place of any unit in a series.
[L. numero]

num·ber

(nŭm'bĕr)
1. A symbol expressive of a certain value or of a specific quantity determined by count.
2. The place of any unit in a series.
[L. numero]

number

a symbol, as a figure or word, expressive of a certain value or a specified quantity determined by count.

atomic number
a number expressive of the number of protons in an atomic nucleus, or the positive charge of the nucleus expressed in terms of the electronic charge; symbol A.
Avogadro's number
see avogadro's number.
mass number
see mass number.
Reynold's number

Patient discussion about number

Q. what is a safe tumor marker number range?

A. depends on the marker...most of the markers are materials that found normally in our body. and there are a number of markers and their levels differentiate. what marker do you mean?

Q. What are the percentage of people dealing with breast cancer out of the number of people that are illness with cancer ? and what is the percentage of death cases out of sum of all cases of breast cases ? is there any difference between the amount of death cases from breast cancer and than the other kinds of cancer ?

A. here's a quote from the CDC site:
"Aside from non-melanoma skin cancer, breast cancer is the most common form of cancer in women. Breast cancer is the number one cause of cancer death in Hispanic women. It is the second most common cause of cancer death in white, black, Asian/Pacific Islander, and American Indian/Alaska Native women."

Q. i have heard that number of scientists found out in one of there researches that breasts Cancer is capable to just disappear with out a treatment , have any one read this article/research ? or maybe just heard about it ? because it is interesting why and how this result happens ...

A. hi pinkofdestiny - try also these links, i know and read a lot about the books of Phillip Day and recommend them to everybody. cancer can be healed and there are also ways to make with success prevention:

http://www.credencegroup.co.uk/Eclub/ses/sessearch.php?q=breast+cancer&pvdc=0

before a woman should loose her breast, she should make a therapy with vitamine B17 - the vitamin which can eliminate cancer in any form, but you should not know about it! it is terrible, but it is the way how politicians and industry-trust treat us.

More discussions about number
References in periodicals archive ?
The other text was Making Sense of Fractions, Ratios, and Proportions (NCTM 2002), the 64th yearbook from the National Council of Teachers of Mathematics (NCTM) that focused specifically on recent research related to issues with rational numbers and offered us a wider view of the existing research.
1c we can conclude that rational numbers for the case of finite N distributed along number axis inhomogeneously.
As Kilpatrick, Swafford, and Findell, (2001) note, "sharing can play the role for rational numbers that counting does for whole numbers" (p.
As is well known, the rational numbers are distributed on the number line everywhere compactly, so this problem statement that a function of their distribution exists might be thought false, as the case of prime numbers.
Both of these schemes are elemental to the rational number concept.
The rational number concept is pivotal to extending whole number concepts while building fraction concepts, which can then be extended to form algebraic concepts.
They explain complex numbers and rational numbers, expanding on the latter as a field and describing rational numbers as a field, then work through the concept of completion, as chains, ordered groups, topological abelian groups, and topological rings and fields.
Let Q denotes the set of all rational numbers, a [member of] Q {-1,0,1}.
Cantor was able to show that aleph-one, the next higher number to aleph-zero, counted sets that could not be put into one-to-one correspondence with the rational numbers.
From Xeno's paradox to an articulate explanation of string theory and Cantor's reasoning that there are the same number of integers and rational numbers (akin to saying that the number of integers is the same as the number of even numbers), this book will make these fascinating ideas accessible to the non-physicist and non-mathematician.
It is noted that if p + [pi]/k = q + [pi]/m for rational numbers p and q and positive integers k and m, then p = q and k = m.