| the shorter wavelengths of electromagnetic radiation in the infrared region of the spectrum, extending from about 0.75 to 2.5 micrometers, usually radiation reflected from plant materials. |
| near-in·fra·red radiation (nîr'ĭn'frə-rěd') n. See near-red radiation. |
| near-red radiation (nîr'rěd') n. Electromagnetic radiation having the shortest wavelengths in the infrared region, between approximately 0.75 and 2.5 micrometers. Also called near-infrared radiation. |