English Reference

Word

symmetry

Phoneticssym·me·try

US/ˈsɪmətɹi/

UK/sˈɪmətɹi/

Definitions

01physical balance

B2 · Math

n. the quality of having two halves that are exactly the same size and shape.

n. the exact correspondence in size, form, and arrangement of parts on opposite sides of a plane, line, or point.

“The butterfly's wings were beautiful because of their perfect symmetry.”

“The architect relied on bilateral symmetry to create a sense of stability and grandeur in the cathedral's facade.”

Usage

Often used as an uncountable noun when discussing the abstract concept.

Synonyms

balanceproportionalityuniformity

Antonyms

asymmetrydisproportion

02aesthetic harmony

C1

n. a balanced and pleasing arrangement of different parts.

n. the harmonious and beautiful proportion of the elements of a whole.

“There is a nice symmetry between the two stories in this book.”

“The poet achieves a structural symmetry by opening and closing the work with the same haunting imagery of the sea.”

Academic

Teaching tip

In academic writing, this sense often describes the balance between two ideas or arguments rather than physical objects.

Antonyms

Real-World Examples

“It’s full of of nice little symmetries and links: it’s issue 90 and a football match is 90 minutes long, and the cover has got this gold foil on it that references football cards.”
The Guardian · 15 Sept 2026
“Formin is likely only one in a set of genes that controls symmetry among animals, says Davison.”
Smithsonian Magazine · 25 Feb 2016

Etymology

From Latin symmetria, from Ancient Greek συμμετρία (summetría), from σύμμετρος (súmmetros, “symmetrical”), from σύν (sún, “with”) + μέτρον (métron, “measure”). By surface analysis, sym- + -metry.

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

Word family

symmetricalAdjectivesymmetryNoun

This entry

Level
B2 · Upper Intermediate
Frequency
Frequent
Updated

Scan code

englishreference.com/q/symmetry

English Reference