[ hahy-test ]
/ ˈhaɪˈtɛst /


(of gasoline) boiling at a relatively low temperature.

Origin of high-test

First recorded in 1955–60
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for high-test

  • Then the motor roared and he and the engineer, took off at double the speed she could make on high-test gas.

    The Sky Is Falling|Lester del Rey
  • It was mid-afternoon before the "Winged Arrow" was towed across to the dock and her tanks refilled with high-test gasoline.

Science definitions for high-test


Relating to highly volatile high-octane gasoline.

The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.