dedicou-se

devoted himself to

→ dedicar
phrase Rare #40,393
devoted himself to Used with ao/às + activity, goal, or field of study. It can also mean simply 'devoted himself to' in a broader sense.
PO: Ela dedicou-se ao estudo da história.
EN: She devoted herself to the study of history.

Dedicou-se aos estudos da biologia durante quase dez anos.

He dedicated himself to the study of biology for almost ten years.

Ele dedicou-se ao estudo da medicina.

He dedicated himself to the study of medicine.

Ele dedicou-se ao plano original.

He dedicated himself to the original plan.

Dedicou-se ao estudo da química.

He dedicated himself to the study of chemistry.