factor in

fac·tor  (fktr)

n.

1. One that actively contributes to an accomplishment, result, or process: "Surprise is the greatest factor in war" (Tom Clancy). See Synonyms at element.

2.

a. One who acts for someone else; an agent.

b. A person or firm that accepts accounts receivable as security for short-term loans.

3. Mathematics One of two or more quantities that divides a given quantity without a remainder. For example, 2 and 3 are factors of 6; a and b are factors of ab.

4. A quantity by which a stated quantity is multiplied or divided, so as to indicate an increase or decrease in a measurement: The rate increased by a factor of ten.

5. A gene. No longer in technical usage.

6. Physiology A substance that functions in a specific biochemical reaction or bodily process, such as blood coagulation.

tr.v. fac·tored, fac·tor·ing, fac·tors

To determine or indicate explicitly the factors of.

Phrasal Verb:

factor in

To figure in: We factored sick days and vacations in when we prepared the work schedule.

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[Middle English factour, perpetrator, agent, from Old French facteur, from Latin factor, maker, from facere, to make; see dh- in Indo-European roots.]

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factor·a·ble adj.

factor·ship n.

Thesaurus

Verb	1.	factor in - consider as relevant when making a decision; "You must factor in the recent developments" factor out, factor consider, study - give careful consideration to; "consider the possibility of moving"
	2.	factor in - resolve into factors; "a quantum computer can factor the number 15" factor, factor out arithmetic - the branch of pure mathematics dealing with the theory of numerical calculations compute, calculate, cipher, cypher, figure, reckon, work out - make a mathematical calculation or computation