© 2026 Sloth Lingo. Learn easy. Lounge wisely.

photoelectric

Upper-Intermediate (B2)

IPA: /ˌfoʊtəʊɪˈlɛktrɪk/

KK: /ˌfoʊtoʊɪˈlɛktrɪk/

adjective
Definition

Relating to the electrical effects that occur when light interacts with certain materials.


Example

The photoelectric effect is a key principle in the operation of solar panels.


Conversation
Sloth A
Have you heard about the new photoelectric sensors being used in cameras?
Sloth B
Yeah, I read that they can capture images with incredible detail.
Sloth A
It's amazing how photoelectric technology has advanced so much over the years.
Sloth B
Totally! I can't wait to see the results from those cameras.

Synonyms & Antonyms
Synonyms
optical
radiative
luminous
Antonyms
nonradiative
dark
opaque
Root Explanation

Photoelectric → It is formed from "photo-" (from Greek "phōs", meaning light) and "electric" (from Greek "ēlektron", meaning amber, which was known to produce static electricity). The word "photoelectric" refers to the phenomenon where light (photo) causes the generation of electricity (electric).

Memory Tip

Think of 'light' ('photo-') causing 'electricity' — that's what photoelectric means.

Visually Confused Words
autophotoelectric
proelectric
pyroelectric
Is this page helpful?