A variable whose values are ordered, that can be multiplied by a scalar, and for which the magnitude of differences in values is meaningful.

plural of cardinal spider

plural of cardinal beetle

plural of cardinal symptom

plural of cardinal tetra

Alternative form of cardinal virtues

A bright red colour, between scarlet and crimson.

Lobelia cardinalis (syn. L. fulgens), a species of lobelia native to the Americas, usually with vibrant red flowers.

(nautical) A sea mark (a buoy or other floating or fixed structure) used in pilotage to indicate the position of a hazard and the direction of safe water.

Cardinalis cardinalis, a North American songbird with a distinctive crest on the head and a mask on the face. The male is a vibrant red, while the female is a dull reddish olive.