Definition

A unit of light measurement that indicates the amount of illumination on a surface.

Example

The phot is used to measure the intensity of light in scientific experiments.

Conversation

Did you know that the brightness of a light bulb is measured in phot?

Really? I had no idea it was measured that way.

Yeah, it's interesting how they quantify light.

I guess I'll pay more attention to the phot ratings next time I shop for bulbs.

Synonyms & Antonyms

Root Explanation

Phot is derived from the Greek root "phōs" (φως) (meaning light). It is often used in English to denote something related to light, such as in photography, which means writing with light.

Memory Tip

Think of 'light' in Greek ('phōs') to remember that 'phot' relates to anything involving light.

Visually Confused Words