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Dictionary

high-oc•tane

Pronunciation: (hī'ok'tān), [key]
—adj.
1. noting a gasoline with a relatively high octane number, characterized by high efficiency and freedom from knock.
2. Informal.forceful or intense; dynamic; high-powered: high-octane efforts to obliterate the competition.

Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.

high-occupancy vehicle

high-pitched

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