<p><strong>Noun</strong></p><ul><li>a globose, reddish-yellow, bitter or sweet, edible citrus fruit.</li><li>any white-flowered, evergreen citrus trees of the genus Citrus, bearing this fruit, as C. aurantium (bitter orange, Seville orange, or sour orange) and C. sinensis (sweet orange), cultivated in warm countries.</li><li>any of several other citrus trees, as the trifoliate orange.</li><li>any of several trees or fruits resembling an orange.</li><li>a color between yellow and red in the spectrum, an effect of light with a wavelength between 590 and 610 nanometers; reddish yellow.</li><li>Art. a secondary color that has been formed by the mixture of red and yellow pigments.</li></ul><p><strong>Adjective</strong></p><ul><li>of or relating to the orange.</li><li>made or prepared with oranges or orangelike flavoring: orange sherbet.</li><li>of the color orange; reddish-yellow.</li></ul>