1. A piece of work created with exceptional skill, expertise, and artistry; a work of outstanding quality that demonstrates mastery of a craft or discipline
His latest novel is a true masterwork that will be remembered for generations.
Seu último romance é um trabalho magistral que será lembrado por gerações.
2. An outstanding academic or professional achievement that demonstrates superior knowledge and execution
The research paper was a magistral work in the field of neuroscience.
O artigo de pesquisa foi um trabalho magistral no campo da neurociência.