physical change

American  

[fiz-i-kuhl cheynj] / ˈfɪz ɪ kəl ˈtʃeɪndʒ /

noun

Chemistry.

1. a usually reversible change in the physical properties of a substance, as size or shape.

   Freezing a liquid is a physical change.

---

Usage

What is a physical change? A physical change is a change to the physical—as opposed to chemical—properties of a substance. They are usually reversible. The physical properties of a substance include such characteristics as shape (volume and size), color, texture, flexibility, density, and mass. Physical changes are not to be confused with chemical changes, which form whole new substances.

Etymology

Origin of physical change

First recorded in 1750–60

Compare meaning

How does physical-change compare to similar and commonly confused words? Explore the most common comparisons:

• physical change vs. chemical change

Example Sentences

Discomfort with one’s body was increasingly reframed by clinicians and activists as a psychological flaw, and the desire for physical change treated with suspicion, as if it betrayed a lack of self-acceptance.

From The Wall Street Journal • Jan. 2, 2026

"There is a physical change that I feel, it does something to your body, for certain," she says.

From BBC • Mar. 15, 2025

The immediate physical change can lead to an uncomfortable sensation in your brain, referred to as “brain zaps,” which feels like small electric shocks.

From Slate • Mar. 28, 2023

“And you see that physical change in posture and that sigh of relief of, ‘You’re right, this is really scary for me too, and I’m allowed to have those really hard feelings,’” she said.

From Los Angeles Times • Feb. 16, 2023

"The very same, and yet not the same," replied Joel, sadly, as he remembered how great was the physical change in him, and which was so apparent.

From The Hazeley Family by Johnson, A. E. (Alfred Edwin)