Dictionary.com
Thesaurus.com
Showing results for positive ray. Search instead for positive track.

positive ray

American  

noun

Physics.

  1. a stream of positive ions traveling from a metallic anode to the cathode in a gas-discharge tube.

Etymology

Origin of positive ray

First recorded in 1900–05

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.