Dictionary.com
Thesaurus.com

isochasm

American  
[ahy-suh-kaz-uhm] / ˈaɪ səˌkæz əm /

noun

Meteorology.

  1. a line on a map or chart connecting points where auroras are observed with equal frequency.

Other Word Forms

Etymology

Origin of isochasm

First recorded in 1880–85; iso- + chasm

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.

Vocabulary.com logo
by dictionary.com

Dictionary.com's Learning Companion

Go beyond just looking up words.
Remember them forever with VocabTrainer.

Start training