octane scale

octane scale

[′äk‚tān ‚skāl]
(engineering)
Series of arbitrary numbers from 0 to 120.3 used to rate the octane number of a gasoline; n-heptane is 0 octane, isooctane is 100, and isooctane + 6 milliliters TEL (tetraethyllead) is 120.3.
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References in periodicals archive ?
When you look back at archive images of Marilyn Monroe - who was considered at the high octane scale of Hollywood glamour in her day - even her style looks relatively restrained now, compared with some of today's aspiring starlets.