Adjective "iron-gray" definition and examples

Pronunciation

/ɡreɪ/

Definitions and examples

adjective

    noun

    The SI unit of the absorbed dose of ionizing radiation, corresponding to one joule per kilogram.
    1. 'When a doctor prescribes a treatment he will define it in terms of dose in Grays required at a point.'
    2. 'Radiation doses are measured in rads or grays, where 1 gray equals 100 rads.'

    Definitions

    noun

    1. a medium shade of gray, like that of freshly broken iron.

    Origin

    (iron gray)1970s: named after Louis H. Gray (1905–65), English radiobiologist.