WordReference Random House Learner's Dictionary of American English © 2026
ˈhigh-ˈtest,
adj.
WordReference Random House Unabridged Dictionary of American English © 2026- Energy(of gasoline) boiling at a relatively low temperature.
high-test
(hī′test′),USA pronunciation adj.
- Energy(of gasoline) boiling at a relatively low temperature.
- 1955–60