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

Definition for factor (2 of 3)

factor VIII


noun

Origin of factor VIII

First recorded in 1960–65

Definition for factor (3 of 3)

factor IX


noun

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for factor

British Dictionary definitions for factor (1 of 2)

factor

/ (ˈfæktə) /

noun

verb

(intr) to engage in the business of a factor
See also factor in
Derived Formsfactorable, adjectivefactorability, nounfactorship, noun

Word 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

British Dictionary definitions for factor (2 of 2)

factor VIII


noun

a protein that participates in the clotting of blood. It is extracted from donated serum and used in the treatment of the commonest type of haemophilia, in which it is absent
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Medicine definitions for factor (1 of 3)

factor

[ făktər ]

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.

Medicine definitions for factor (2 of 3)

factor VIII


n.

A factor in the clotting of blood, a deficiency of which is associated with hemophilia A.antihemophilic factor antihemophilic globulin antihemophilic globulin A proserum prothrombin conversion accelerator

Medicine definitions for factor (3 of 3)

factor IX


n.

A factor in the clotting of blood necessary for the formation of intrinsic blood thromboplastin; a deficiency of it causes hemophilia B.antihemophilic globulin B Christmas factor
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.

Science definitions for factor

factor

[ făktər ]

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.