There are multiple definitions - click on the translation that matches your context.

prazo de vigência

substantivo

full

term

noun

Comparative law notes

In a contract, "prazo de vigência" is usually translated as "term".

Definitions of term

a specified period of time, eg the term of a contract, lease, loan or office

The term of agreement is 5 years.

an obligation, condition or duty that has to be carried out under a contract or an agreement

Most tenancy agreements contain unfair contract terms, says the UK's Office of Fair Trading, which has tightened guidelines.