factor iv

ion of calcium; a factor in the clotting of blood ;

factor ix

coagulation factor whose absence is associated with hemophilia B ;

factor of proportionality

the constant value of the ratio of two proportional quantities x and y; usually written y = kx, where k is the factor of proportionality ;

factor of safety

the ratio of the breaking stress of a structure to the estimated maximum stress in ordinary use ;

factor v

a coagulation factor ;

factor vii

a coagulation factor formed in the kidney under the influence of vitamin K ;

factor viii

a coagulation factor (trade name Hemofil) whose absence is associated with hemophilia A ;

factor x

coagulation factor that is converted to an enzyme that converts prothrombin to thrombin in a reaction that depends on calcium ions and other coagulation factors ;

factor xi

coagulation factor whose deficiency results in a hemorrhagic tendency ;

factor xii

coagulation factor whose deficiency results in prolongation of clotting time of venous blood ;

factor xiii

in the clotting of blood thrombin catalyzes factor XIII into its active form (fibrinase) which causes fibrin to form a stable clot ;

factorial

the product of all the integers up to and including a given integer; "1, 2, 6, 24, and 120 are factorials" ;

factoring

(mathematics) the resolution of an integer or polynomial into factors such that when multiplied together they give the integer or polynomial ;

factorisation

(mathematics) the resolution of an integer or polynomial into factors such that when multiplied together they give the integer or polynomial ;

factorization

(mathematics) the resolution of an integer or polynomial into factors such that when multiplied together they give the integer or polynomial ;

factory

a plant consisting of one or more buildings with facilities for manufacturing ;

factory farm

a large-scale farming enterprise ;

factory price

price charged for goods picked up at the factory ;

factory ship

a whaling ship equipped to process whale products at sea ;

factory whistle

a whistle at a factory that is sounded to announce times for starting or stopping work ;

factory worker

a workman in a mill or factory ;

factotum

a servant employed to do a variety of jobs ;

facts of life

the sexual activity of conceiving and bearing offspring ;

factuality

the quality of being actual or based on fact; "the realm of factuality must be distinguished from the realm of imagination" ;

factualness

the quality of being actual or based on fact; "the realm of factuality must be distinguished from the realm of imagination" ;

facula

a large bright spot on the sun's photosphere occurring most frequently in the vicinity of sunspots ; a bright spot on a planet ;

faculty

one of the inherent cognitive or perceptual powers of the mind ; the body of teachers and administrators at a school; "the dean addressed the letter to the entire staff of the university" ;

faculty member

an educator who works at a college or university ;

fad

an interest followed with exaggerated zeal; "he always follows the latest fads"; "it was all the rage that season" ;

fad diet

a reducing diet that enjoys temporary popularity ;

faddist

a person who subscribes to a variety of fads ;

fade

gradually ceasing to be visible ; a golf shot that curves to the right for a right-handed golfer; "he took lessons to cure his slicing" ;

fadeout

a slow or gradual disappearance ; a gradual temporary loss of a transmitted signal due to electrical disturbances ;

fading

weakening in force or intensity; "attenuation in the volume of the sound" ;

fading away

gradually diminishing in brightness or loudness or strength ;

fado

a sad Portuguese folksong ;

fae

a device consisting of a container of fuel and two explosive charges; the first charge bursts open the fuel container at a predetermined height and spreads the fuel in a cloud that mixes with atmospheric oxygen; the second charge detonates the cloud which creates an enormous blast wave and incinerates whatever is below ;

faecal matter

solid excretory product evacuated from the bowels ;

faecal occult test

a test performed at home in which you collect specimens of your stool that are tested for traces of blood; used to detect colorectal cancers ;

faecalith

a hard mass of fecal matter ;