dielectric

noun

di·​elec·​tric ˌdī-ə-ˈlek-trik 

: a nonconductor of direct electric current

dielectric adjective

Examples of dielectric in a Sentence

Recent Examples on the Web

For instance, the middle layer conducting ions sits below the evaporating layer on top, while sitting above a dielectric (a substance that poorly conducts electricity but effectively stores it) array of silicon nanopillars. — New Atlas, 26 Apr. 2026

Another reason customers are not in-housing is that the complexity of liquid cooling – managing technical challenges such as fluid dynamics, leak prevention, and dielectric fluids -- is much higher than air cooling. — Peter Cohan, Forbes.com, 13 Feb. 2026

What surprises most people is how thin these insulating, current-quelling dielectrics are. — Mahesh Nepal, The Conversation, 19 Jan. 2026

As for the waveguide, it’s made of a dielectric at the center, which channels the terahertz signal, surrounded by cladding. — IEEE Spectrum, 27 Dec. 2025

Word History

Etymology

dia- + electric

First Known Use

1837, in the meaning defined above

Phrases Containing dielectric

• dielectric constant
• dielectric heating

Rhymes for dielectric

• electric
• bioelectric
• ferroelectric
• hydroelectric
• isoelectric
• photoelectric
• pyroelectric
• thermoelectric
• nonelectric
• piezoelectric

Medical Definition

dielectric

noun

di·​elec·​tric ˌdī-i-ˈlek-trik 

: a nonconductor of direct electric current

dielectric adjective