| NOUN | phenomenon | heat ray | a ray that produces a thermal effect |
|---|
| Meaning | A ray that produces a thermal effect. | |
|---|---|---|
| Narrower | infrared ray | A ray of infrared radiation |
| Broader | beam, beam of light, light beam, ray, ray of light, shaft, shaft of light, irradiation | A column of light (as from a beacon) |
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