decimal fraction

noun Arithmetic.
a fraction whose denominator is some power of 10, usually indicated by a dot (decimal point or point) written before the numerator: as 0.4 = 4/10; 0.126 = 126/1000. Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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World English Dictionary
decimal fraction
another name for decimal

decimal point
a full stop or a raised full stop placed between the integral and fractional parts of a number in the decimal system
usage  Conventions relating to the use of the decimal point are confused. The IX General Conference on Weights and Measures resolved in 1948 that the decimal point should be a point on the line or a comma, but not a centre dot. It also resolved that figures could be grouped in threes about the decimal point, but that no point or comma should be used for this purpose. These conventions are adopted in this dictionary. However, the Decimal Currency Board recommended that for sums of money the centre dot should be used as the decimal point and that the comma should be used as the thousand marker. Moreover, in some countries the position is reversed, the comma being used as the decimal point and the dot as the thousand marker

Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009
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American Heritage
Science Dictionary
decimal fraction  
A decimal having no digits to the left of the decimal point except zero, such as 0.2 or 0.00354.
decimal point  
A period used in decimal notation to separate whole numbers from fractions, as in the number 1.3, which represents 1 + 3/10 .
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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American Heritage
Cultural Dictionary

decimal point definition

The point or dot placed to the left of decimals to separate them from the whole number portion of the decimal. When the number is spoken aloud, the word point is usually used to signify the decimal point. For example, “8.3” is read “eight point three.”

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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Computing Dictionary

decimal point definition

"." ASCII character 46. Common names are: point; dot; ITU-T, USA: period; ITU-T: decimal point. Rare: radix point; UK: full stop; INTERCAL: spot.

The Free On-line Dictionary of Computing, © Denis Howe 2010
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Example sentences
Establishing a causal relationship and being able to quantify it down to the
  last decimal point are quite different things.
Some locales may use a different character to denote the decimal point.
In computer-readable files, the decimal point is implied.
If a decimal point is missed, an overdose may occur.
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