English Reference
noun · verb

proportion

n. · v.
US /pɹəˈpɔɹʃən/ UK /pɹəpˈɔːʃən/ pro·por·tion UK spelling proportioning

  1. 01 B2 Upper Intermediate Academic

    n.a part or share of a total amount.

    n.a portion or quantity of something considered in relation to the whole. Often used with the preposition 'of'.

    Simple

    A large proportion of the students live in the city centre.

    In context

    A significant proportion of the annual budget is allocated to research and development, reflecting the company's commitment to innovation.

    Usage

    Commonly follows 'a [adjective] proportion of [noun]'.

  2. 02 B2 Upper Intermediate Academic Math

    n.the relationship between the size, amount, or importance of two things.

    n.the comparative relation between things or magnitudes as to size, quantity, or degree.

    Simple

    The proportion of sugar to flour in this recipe is very high.

    In context

    The architect adjusted the proportion of the windows to the wall surface to ensure the building didn't look too heavy.

    Usage

    Often used with the preposition 'to'.

  3. 03 B2 Upper Intermediate Art

    n.the correct or pleasing relationship between the parts of something.

    n.the harmonious relation of parts to each other or to the whole. Uncountable in this abstract sense.

    Simple

    The statue's head is too small, so it looks out of proportion.

    In context

    The designer focused on achieving perfect proportion in the living room, ensuring the furniture didn't overwhelm the space.

    disproportionimbalance
  4. 04 C1 Advanced Formal

    n.the size or scale of something, especially when it is very large.

    n.the dimensions or size of an object or situation. Almost always used in the plural form.

    Simple

    The rescue operation reached massive proportions as more volunteers arrived.

    In context

    The crisis has reached such proportions that international intervention is now considered a necessity.

    Usage

    Typically used in the plural: 'proportions'.

  5. 05 C2 Proficiency Formal

    v.to adjust something so that it fits or matches something else in size or amount.

    v.to adjust or regulate something so that it has a suitable or relative relationship to something else. Transitive use.

    Simple

    The punishment should be proportioned to the crime.

    In context

    The architect carefully proportioned the columns to match the height of the ceiling, creating a sense of classical grandeur.

    Usage

    Often used in the passive voice: 'to be proportioned to'.

Usage considerable proportion · contain proportion · direct proportion

Researchers said the high proportion of intrapartum stillbirths raises concerns about the quality and timeliness of care women receive during labour and delivery.

Al Jazeera· 14 Aug 2026

In other words, there will be lots more people qualifying for the state pension, and fewer working people, as a proportion, paying taxes into the pot to cover the bill.

BBC News· 30 Jun 2026

From Middle English proporcion, from Old French proportion, from Latin prōportiō (“comparative relation, proportion, symmetry, analogy”), from pro (“for, before”) + portio (“share, part”); see portion.

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

This entry
Origin Latin prōportiō
Level B2 · Upper Intermediate
Frequency Common
Updated