cardinal
adjectivemasculine/feminine/kɐɾdiˈnal/medium
car·di·nal
Definition
Fundamental, principal, essential. (As a numeral) indicating absolute quantity (e.g., one, two, three).
Prudence is one of the four cardinal virtues.
'Five' is a cardinal number.
Common collocations
cardinal numberscardinal pointscardinal virtuescardinal direction
Etymology
Do latim 'cardinalis' (principal, fundamental), de 'cardo, -inis' (gonzo, ponto principal).