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ISO




1. incentive stock option.
2. International Standardization Organization.
3. the numerical exposure index of a photographic film under the system adopted by the International Standardization Organization, used to indicate the light sensitivity of the film's emulsion.

iso-




a combining form meaning “equal,” used in the formation of compound words: isochromatic; in chemistry, used in the names of substances which are isomeric with the substance denoted by the base word: isocyanic acid. Also, esp. before a vowel,is-.

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

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