ray ( rays plural )
1 n-count Rays of light are narrow beams of light.
...the first rays of light spread over the horizon..., The sun's rays can penetrate water up to 10 feet.
2 n-count A ray of hope, comfort, or other positive quality is a small amount of it that you welcome because it makes a bad situation seem less bad. N of n
(=glimmer) They could provide a ray of hope amid the general business and economic gloom...
cathode-ray tube ( cathode-ray tubes plural ) A cathode-ray tube is a device in televisions and computer terminals which sends an image onto the screen. (TECHNICAL) n-count
X-ray ( X-rays plural & 3rd person present) ( X-raying present participle) ( X-rayed past tense & past participle ) , x-ray
1 n-count X-rays are a type of radiation that can pass through most solid materials. X-rays are used by doctors to examine the bones or organs inside your body and are also used at airports to see inside people's luggage.
2 n-count An X-ray is a picture made by sending X-rays through something, usually someone's body.
She was advised to have an abdominal X-ray.
3 verb If someone or something is X-rayed, an X-ray picture is taken of them.
All hand baggage would be x-rayed... be V-ed
They took my pulse, took my blood pressure, and X-rayed my jaw. V n
Translation English - Cobuild Collins Dictionary
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"Collins Cobuild English Dictionary for Advanced Learners 4th edition published in 2003 © HarperCollins Publishers 1987, 1995, 2001, 2003 and Collins A-Z Thesaurus 1st edition first published in 1995 © HarperCollins Publishers 1995"