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fixed point

British  

noun

  1. physics a reproducible invariant temperature; the boiling point, freezing point, or triple point of a substance, such as water, that is used to calibrate a thermometer or define a temperature scale

  2. maths a point that is not moved by a given transformation

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

But importantly, domestication is not a fixed point in evolution — it’s an ongoing process.

From Salon • Apr. 23, 2026

With scarcely a right angle, and therefore no fixed point for my eyes to rest, the interior kept giving me differing impressions.

From The Wall Street Journal • Mar. 6, 2026

Write down your goals focusing on "direction and experience rather than a fixed point".

From BBC • Dec. 26, 2025

A fixed point in a turning world as ever.

From Los Angeles Times • May 31, 2024

The room was unstable unless I looked at some fixed point.

From "The Sun Also Rises" by Ernest Hemingway

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.