Constant vs. Variable

Constantadjective

Unchanged through time or space; permanent.

Variableadjective

Able to vary.

‘variable winds or seasons; a variable quantity’;

Constantadjective

Consistently recurring over time; persistent.

Variableadjective

Likely to vary.

Constantadjective

Steady in purpose, action, feeling, etc.

Variableadjective

Marked by diversity or difference.

Constantadjective

Firm; solid; not fluid.

Variableadjective

(mathematics) Having no fixed quantitative value.

Constantadjective

(obsolete) Consistent; logical.

Variableadjective

(biology) Tending to deviate from a normal or recognized type.

Constantnoun

That which is permanent or invariable.

Variablenoun

Something that is variable.

Constantnoun

(algebra) A quantity that remains at a fixed value throughout a given discussion.

Variablenoun

Something whose value may be dictated or discovered.

‘There are several variables to consider here.’;

Constantnoun

(science) Any property of an experiment, determined numerically, that does not change under given circumstances.

Variablenoun

(mathematics) A quantity that may assume any one of a set of values.

Constantnoun

(computing) An identifier that is bound to an invariant value; a fixed value given a name to aid in readability of source code.

Variablenoun

(mathematics) A symbol representing a variable.

Constantadjective

Firm; solid; fixed; immovable; - opposed to fluid.

‘If . . . you mix them, you may turn these two fluid liquors into a constant body.’;

Variablenoun

(programming) A named memory location in which a program can store intermediate results and from which it can read them.

Constantadjective

Not liable, or given, to change; permanent; regular; continuous; continually recurring; steadfast; faithful; not fickle. Opposite of changeable and variable.

‘Both loving one fair maid, they yet remained constant friends.’; ‘I am constant to my purposes.’; ‘His gifts, his constant courtship, nothing gained.’; ‘Onward the constant current sweeps.’;

Variablenoun

(astronomy) A variable star.

Constantadjective

Remaining unchanged or invariable, as a quantity, force, law, etc.

Variablenoun

(nautical) A shifting wind, or one that varies in force.

Constantadjective

Consistent; logical.

Variablenoun

Those parts of the sea where a steady wind is not expected, especially the parts between the trade-wind belts.

Constantnoun

That which is not subject to change; that which is invariable.

Variableadjective

Having the capacity of varying or changing; capable of alternation in any manner; changeable; as, variable winds or seasons; a variable quantity.

Constantnoun

A quantity that does not change its value; - used in countradistinction to variable.

Variableadjective

Liable to vary; too susceptible of change; mutable; fickle; unsteady; inconstant; as, the affections of men are variable; passions are variable.

‘Lest that thy love prove likewise variable.’; ‘His heart, I know, how variable and vain!’;

Constantnoun

A number whose value, when ascertained (as by observation) and substituted in a general mathematical formula expressing an astronomical law, completely determines that law and enables predictions to be made of its effect in particular cases.

Variablenoun

That which is variable; that which varies, or is subject to change.

Constantnoun

A number expressing some property or condition of a substance or of an instrument of precision; as, the dielectric constant of quartz; the collimation constant of a transit instrument.

Variablenoun

A quantity which may increase or decrease; a quantity which admits of an infinite number of values in the same expression; a variable quantity; as, in the equation x2 - y2 = R2, x and y are variables.

Constantnoun

a data structure that does not change during the course of execution of a program. It may be a number, a string, or a more complex data structure; - contrasted with variable.

Variablenoun

A shifting wind, or one that varies in force.

Constantnoun

a quantity that does not vary

Variablenoun

something that is likely to vary; something that is subject to variation;

‘the weather is one variable to be considered’;

Constantnoun

a number representing a quantity assumed to have a fixed value in a specified mathematical context;

‘the velocity of light is a constant’;

Variablenoun

a quantity that can assume any of a set of values

Constantadjective

persistent in occurrence and unvarying in nature;

‘maintained a constant temperature’; ‘a constant beat’; ‘principles of unvarying validity’; ‘a steady breeze’;

Variablenoun

a star that varies noticeably in brightness

Constantadjective

continually recurring or continuing without interruption;

‘constant repetition of the exercise’; ‘constant chatter of monkeys’;

Variablenoun

a symbol (like x or y) that is used in mathematical or logical expressions to represent a variable quantity

Constantadjective

steadfast in purpose or devotion or affection;

‘a man constant in adherence to his ideals’; ‘a constant lover’; ‘constant as the northern star’;

Variableadjective

liable to or capable of change;

‘rainfall in the tropics is notoriously variable’; ‘variable winds’; ‘variable expenses’;

Constantadjective

uninterrupted in time and indefinitely long continuing;

‘the ceaseless thunder of surf’; ‘in constant pain’; ‘night and day we live with the incessant noise of the city’; ‘the never-ending search for happiness’; ‘the perpetual struggle to maintain standards in a democracy’; ‘man's unceasing warfare with drought and isolation’; ‘unremitting demands of hunger’;

Variableadjective

marked by diversity or difference;

‘the varying angles of roof slope’; ‘nature is infinitely variable’;

Variableadjective

(used of a device) designed so that a property (as e.g. light) can be varied;

‘a variable capacitor’; ‘variable filters in front of the mercury xenon lights’;