cardinal
noun(car-di-nal)
crested thick-billed North American finch having bright red plumage in the male
Synonyms: cardinal grosbeak, cardinalis cardinalis,
redbird, richmondena cardinalis,
cardinal
noun(car-di-nal)
the number of elements in a mathematical set; denotes a quantity but not the order
Synonyms: cardinal number,
cardinal
noun(car-di-nal)
a variable color averaging a vivid red
cardinal
adjective(car-di-nal)
serving as an essential component
Examples:
A cardinal rule.
cardinal
adjective(car-di-nal)
being or denoting a numerical quantity but not order
Examples:
Cardinal numbers.
cardinal
noun(car-di-nal)
(Roman Catholic Church) one of a group of more than 100 prominent bishops in the Sacred College who advise the Pope and elect new Popes