a system of coding navigational aids by shape, color, and number, according to their positions relative to navigational hazards.
a small, brilliantly colored red and blue characin fish, Paracheirodon axelrodi, native to tropical forest streams in Brazil and Colombia: a popular aquarium fish.
a basic and dominant characteristic, as greed or ambition, that, according to a theory developed by psychologist Gordon Allport (1936), controls the behavior of many people.
anything considered to be an important or characteristic virtue: Tenacity is his cardinal virtue. cardinal virtues, Ancient Philosophy. justice, prudence, temperance, and fortitude.
- Cardinal veins
cardinal veins cardinal veins pl.n. Any of three major systemic venous channels in certain adult vertebrates and in the embryos of other vertebrates, such as humans. Historical Examples On the development of the cardinal veins (to be described below) considerable changes are effected in the subintestinal vein. The Works of Francis Maitland Balfour, Volume III […]