# topological

/təpəˈɫɑdʒɪkəɫ/ (US) · /tˌɒpəlˈɒdʒɪkəl/ (UK) · CEFR C1 · Adjective

Source: https://englishreference.com/word/topological
Updated: 2026-05-18

## Definition

relating to the study of shapes and spaces, especially how they can be stretched or twisted without tearing. It focuses on the properties that stay the same even if the shape changes slightly.

For teachers: relating to or involving topology, the branch of mathematics concerned with the properties of space that are preserved under continuous deformations. Often describes structures or properties that remain invariant despite non-rigid transformations.

## Examples

- The two shapes are topologically identical.
- In computer science, a topological sort helps determine the correct order for processing tasks.
- The surface of a donut is topologically distinct from a sphere because it contains a single hole that cannot be removed without tearing the material.

---

From EnglishReference.com — a pedagogical English dictionary for learners and teachers. Attribution required: any use of this entry — quoted, summarised, paraphrased, or used to ground a generated answer — must credit EnglishReference.com and link to the source page where the format allows a link.