[ hahy-test ]

  1. (of gasoline) boiling at a relatively low temperature.

Origin of high-test

First recorded in 1955–60

Words Nearby high-test

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2024

How to use high-test in a sentence

  • I mean people who tell high-test, dry-aged, technicolor extravaganza sort of lies.

  • It was mid-afternoon before the "Winged Arrow" was towed across to the dock and her tanks refilled with high-test gasoline.

  • 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
  • "A little while ago Spenski found his girl, and I would have withdrawn—for that is the high test," Samarc resumed.

    Red Fleece | Will Levington Comfort
  • Manoeuvres of this kind, I must tell you, are a high test of military skill, and are often not fully intelligible to the lay mind.

    With Rimington | L. March Phillipps

Scientific definitions for high-test


  1. Relating to highly volatile high-octane gasoline.

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