English Reference
noun

variation

n.
US /ˌvɛɹiˈeɪʃən/ UK /vˌeəɹɪˈeɪʃən/ vari·a·tion UK spelling variation's, variation's

  1. 01 B2 Upper Intermediate

    a change in the amount, level, or form of something.

    the act or process of varying; a partial change in the state, quality, or quantity of something.

    Simple

    There is a lot of variation in the weather during the spring months.

    In context

    The study observed significant regional variation in the cost of living, with urban centres showing much higher inflation than rural areas.

    Usage

    Often used with the preposition 'in' to specify the subject of change.

  2. 02 B2 Upper Intermediate

    something that is slightly different from the usual form or from others of the same type.

    a related but distinct version of a thing that shares a common origin or theme.

    Simple

    The chef created a new variation of the classic chocolate cake.

    In context

    The virus has several variations, each requiring a slightly different approach to treatment and prevention.

    Usage

    Commonly followed by 'of' to indicate the original or base form.

  3. 03 C1 Advanced Technical Music

    a part of a piece of music where the main tune is played in a different way.

    a formal technique where a musical theme is repeated with alterations to its melody, harmony, or rhythm while remaining recognisable.

    Simple

    The pianist played the theme followed by five difficult variations.

    In context

    The composer's use of rhythmic variation in the third movement provides a stark contrast to the melodic simplicity of the opening theme.

  4. 04 C1 Advanced Academic Science

    differences between living things of the same type, often caused by their genes.

    the modification of hereditary traits within a species or population, often resulting from genetic or environmental factors.

    Simple

    Genetic variation helps a species survive when its environment changes.

    In context

    Natural selection acts upon the phenotypic variation present within a population, favouring individuals with traits better suited to their ecological niche.

  5. 05 C2 Proficiency AcademicTechnical Science

    when speakers use different words or sounds to mean the same thing.

    the existence of competing linguistic forms within a single language, often determined by social or regional factors.

    Simple

    The way people say 'water' is a common example of regional variation.

    In context

    Sociolinguistic variation often reflects the speaker's identity, with certain phonological features marking membership in a specific social class.

    diversityalternation

Usage considerable variation · examine variation · explain variation

Variation was also seen among individual cells of the same type.

ScienceDaily· 13 Aug 2026

Volcanic eruptions can have the opposite effect by sending particles into the atmosphere that reflect sunlight, while changes in the Sun's activity can also produce smaller temperature variations.

ScienceDaily· 1 Aug 2026

From Middle French variation, from Old French variacion, from Latin variātiō, from vary + -ation.

Etymology adapted from Wiktionary, available under CC BY-SA 4.0.

This entry
Level B2 · Upper Intermediate
Frequency Common
Updated