1. An area of study, work, or activity that is recognized as valid, lawful, and socially acceptable
Medicine is a legitimate field of professional practice.
A medicina é um campo legítimo de prática profissional.
2. A domain or sphere of activity that has proper authorization and legal standing
Research in renewable energy is now a legitimate field of scientific inquiry.
A pesquisa em energia renovável é agora um campo legítimo de investigação científica.