name, noun ·Rare ·Advanced level

Definitions

Noun

1. 1
   A unit of frequency equal to 10¹² hertz, or one terahertz.
2. 2
   A Fresnel lens or a light feature using such a lens

Proper Noun

1. 1
   A surname from French, notably held by Augustin-Jean Fresnel.

Synonyms

All synonyms

augustin jean fresnel

Etymology

For Augustin-Jean Fresnel, French physicist.

Related phrases

Fresnel coefficientFresnel equationFresnel lampFresnel lanternFresnel lensFresnel numberFresnel reflectionFresnel rhombFresnel spotFresnel zone plateHuygens-Fresnel principlefresnel lens

Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.