Noun
-
crested thick-billed North American finch having bright red plumage in the male
- cardinal grosbeak - richmondena cardinalis - cardinalis cardinalis -
a variable color averaging a vivid red
-
the number of elements in a mathematical set
denotes a quantity but not the order
- cardinal number -
(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
Adjective
-
being or denoting a numerical quantity but not order
"cardinal numbers"
-
serving as an essential component
"a cardinal rule"
"the central cause of the problem"
"an example that was fundamental to the argument"
"computers are fundamental to modern industrial structure"