(of gasoline) boiling at a relatively low temperature.

Nearby words

  1. high-sticking,
  2. high-strung,
  3. high-tail,
  4. high-tech,
  5. high-tension,
  6. high-ticket,
  7. high-toned,
  8. high-top,
  9. high-up,
  10. high-voltage

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.