Nearby words
Origin of factor
1400–50; late Middle English facto(u)r < Latin factor maker, perpetrator, equivalent to fac(ere) to make, do + -tor -tor
Related forms
Dictionary.com Unabridged
Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
British Dictionary definitions for factor in (1 of 2)
factor in
verb
(tr, adverb) mainly US to take account of (something) when making a calculation
British Dictionary definitions for factor in (2 of 2)
factor
/ (ˈfæktə) /
noun
verb
(intr) to engage in the business of a factor
See also factor in
Derived Forms
factorable, adjectivefactorability, nounfactorship, nounWord Origin for factor
C15: from Latin: one who acts, from facere to do
usage
Factor (sense 1) should only be used to refer to something which contributes to a result. It should not be used to refer to a part of something such as a plan or arrangement; instead a word such as component or element should be used
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
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Medicine definitions for factor in
factor
[ făk′tər ]
n.
One that contributes in the cause of an action.
A mathematical component that by multiplication makes up a number or expression.
A gene.
A substance, such as a vitamin, that functions in a specific biochemical reaction or bodily process, such as blood coagulation.
The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
Science definitions for factor in
factor
[ făk′tər ]
Noun
One of two or more numbers or expressions that are multiplied to obtain a given product. For example, 2 and 3 are factors of 6, and a + b and a - b are factors of a2 - b2.
A substance found in the body, such as a protein, that is essential to a biological process. For example, growth factors are needed for proper cell growth and development.
Verb
To find the factors of a number or expression. For example, the number 12 can be factored into 2 and 6, or 3 and 4, or 1 and 12.
The American Heritage® Science Dictionary
Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
Idioms and Phrases with factor in
factor in
Figure in, include as a basic element. For example, In preparing the schedule we factored in vacation and sick days. This term comes from mathematics. [Mid-1900s]
The American Heritage® Idioms Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.