 infrared |
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| 1. | [ adjective ] having or employing wavelengths longer than light but shorter than radio waves; lying outside the visible spectrum at its red end | |
| Examples: | "infrared radiation" "infrared photography" |
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| Related terms: | invisible | |
| 2. | [ noun ] (physics) the infrared part of the electromagnetic spectrum; electromagnetic wave frequencies below the visible range | |
| Synonyms: | infrared_frequency | |
| Examples: | "they could sense radiation in the infrared" |
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| Related terms: | frequency infrared_spectrum | |
| 3. | [ noun ] (physics) electromagnetic radiation with wavelengths longer than visible light but shorter than radio waves | |
| Synonyms: | infrared_emission infrared_radiation infrared_light | |
| Related terms: | actinic_radiation | |
| Similar spelling: |
infra inbred inboard invirase in_force infringe infra_dig in_for inbreeding infract infarct invariance invariable |
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