Dictionary.net

the angle (at a particular location) between magnetic north and true north

the act of changing or altering something slightly but noticeably from the norm or standard; "who is responsible for these variations in taxation?"

an artifact that deviates from a norm or standard; "he patented a variation on the sandal"

(astronomy) any perturbation of the mean motion or orbit of a planet or satellite (especially a perturbation of the earth's moon)

something a little different from others of the same type; "an experimental version of the night fighter"; "an emery wheel is a modern variant of the grindstone"; "the boy is a younger edition of his father"

the angle (at a particular location) between magnetic north and true north

something a little different from others of the same type; "an experimental version of the night fighter"; "an emery wheel is a modern variant of the grindstone"

the act of changing or altering something slightly but noticeably from the norm or standard; "who is responsible for these variations in taxation?"

an artifact that deviates from a norm or standard; "he patented a variation on the sandal"

(astronomy) any perturbation of the mean motion or orbit of a planet or satellite (especially a perturbation of the earth's moon)

The act of varying; a partial change in the form, position, state, or qualities of a thing; modification; alternation; mutation; diversity; deviation; as, a variation of color in different lights; a variation in size; variation of language.

Extent to which a thing varies; amount of departure from a position or state; amount or rate of change.

Change of termination of words, as in declension, conjugation, derivation, etc.

Repetition of a theme or melody with fanciful embellishments or modifications, in time, tune, or harmony, or sometimes change of key; the presentation of a musical thought in new and varied aspects, yet so that the essential features of the original shall still preserve their identity.

One of the different arrangements which can be made of any number of quantities taking a certain number of them together.

The act of varying; a partial change in the form, position, state, or qualities of a thing; modification; alternation; mutation; diversity; deviation; as, a variation of color in different lights; a variation in size; variation of language.

Extent to which a thing varies; amount of departure from a position or state; amount or rate of change.

Change of termination of words, as in declension, conjugation, derivation, etc.

Repetition of a theme or melody with fanciful embellishments or modifications, in time, tune, or harmony, or sometimes change of key; the presentation of a musical thought in new and varied aspects, yet so that the essential features of the original shall still preserve their identity.

One of the different arrangements which can be made of any number of quantities taking a certain number of them together.

The phenotypic differences among individuals in a population.

The act of altering or changing; a modification or change; a departure from a regular rule or course; extent to which a thing alters; as, there is little variation in the temperature; difference in details between two things of the same class; in music, the repeating of a single melody with changes and decorations in time, harmony, elaboration, etc.

Variational.

Process of changing.

A varying: a change: change from one to another: successive change: the extent to which a thing varies: (gram.) change of termination: (mus.) a manner of singing or playing the same air with various changes in time, rhythm, or key.

Change; deviation; in mus., a theme embellished.

The act or state of varying; modification; diversity.

A partial change in the form, position, state, or qualities of the same thing; alteration; difference; change from one to another; the extent to which a thing varies; inflection; deviation; an inequality of the moon's motion depending on the angular distance of the moon from the sun; the deviation of the magnetic needle from the true north point, or its declination; the different manner of singing or playing the same air or tune. See Vary.

Alteration; partial change in form, appearance, position, &c.; change, as of termination; in music, the singing or playing of an air with various embellishments.

Divergence from type in certain characteristics.

The act or process of changing in form, character, rate of motion, etc.; also the amount or degree of such change.

n. Act of varying; a partial change in the form, position, state, or qualities of the same thing;—difference; change from one to another change from itself; inconsistency; —deviation;—in grammar, inflection; change of termination in nouns and adjectives, constituting gender, number, and case;—the extent to which a thing varies; amount or rate of change;—repetition of a tune or melody with various embellishments and fanciful changes.