| 释义 |
WordReference Random House Unabridged Dictionary of American English © 2024ir•ra•di•a•tion (i rā′dē ā′shən),USA pronunciation n. - Physicsthe act of irradiating.
- Physicsthe state of being irradiated.
- intellectual or spiritual enlightenment.
- a ray of light;
beam. - [Optics.]the apparent enlargement of an object when seen against a dark background.
- the use of x-rays or other forms of radiation for the treatment of disease, the making of x-ray photographs, the manufacture of vitamin D, etc.
- Physicsexposure or the process of exposure to x-rays or other radiation.
- Physicsirradiance.
- Late Latin irradiātiōn- (stem of irradiātiō). See ir-1, radiation
- 1580–90
WordReference Random House Learner's Dictionary of American English © 2024ir•ra•di•ate /v. ɪˈreɪdiˌeɪt; adj. -ɪt, -ˌeɪt/USA pronunciation v. [~ + object], -at•ed, -at•ing, adj. - to shed rays of light on;
illuminate. - Physicsto heat with radiant energy.
- Physicsto expose to radiation, as for medical treatment.
ir•ra•di•a•tion /ɪˌreɪdiˈeɪʃən/USA pronunciation n. [uncountable] WordReference Random House Unabridged Dictionary of American English © 2024ir•ra•di•ate (v. i rā′dē āt′;adj. i rā′dē it, -āt′),USA pronunciation v., -at•ed, -at•ing, adj. v.t. - to shed rays of light upon;
illuminate. - to illumine intellectually or spiritually.
- to brighten as if with light.
- Physicsto radiate (light, illumination, etc.).
- Physicsto heat with radiant energy.
- Physicsto treat by exposure to radiation, as of ultraviolet light.
- Physicsto expose to radiation.
v.i. - [Archaic.]
- to emit rays;
shine. - to become radiant.
adj. - irradiated;
bright.
- Latin irradiātus, past participle of irradiāre to shine upon. See ir-1, radiate
- 1595–1605
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