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infrared - definition and synonyms


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adjective physics infrared pronunciation in British English /ˌɪnfrəˈred/
  1. relating to or using a type of light that can be felt as heat but cannot be seen. It has wavelengths that are longer than those of light that can be seen, but shorter than those of radio waves.

sea lion

in an online conversation, repeatedly asking a person questions which suggest that you are interested in what they are talking about, but are actually intended to annoy them

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