(Canada, US, medicine) the condition on the occurrence of a hazardous material spill or release.

Alternative form of Osage orange

plural of cherry orange

an azo dye, used for dyeing wool

plural of naphthol orange

(entomology) A species of satyrine butterfly with orange wings, Hypocysta adiante, endemic to northern Australia.

plural of orange ringlet

A hue of orange used to set objects apart from their surroundings, particularly in complementary contrast to the azure color of the sky; commonly used in the US for traffic cones and other construction zone marking.

plural of safety orange

A publication of the United States Food and Drug Administration (FDA) that identifies drug products approved on the basis of safety and effectiveness.