Is the word descoberto the same in Brazilian and European Portuguese?

Yes

The word "descoberto" is identical in meaning, spelling, and grammatical function in both Brazilian and Continental Portuguese. The only difference is in pronunciation.

In Brazilian Portuguese, the pronunciation is more "open" and melodic. The unstressed vowels are pronounced more clearly, and the word maintains a rhythmic flow.

In Continental Portuguese, there is a significant tendency toward vowel reduction. The unstressed "e" may be almost silent or extremely short, and the final "o" is typically pronounced as a /u/ sound. This makes the word sound more "closed" or "clipped" to a Brazilian ear.

Brazilian Portuguese Examples:

1. O erro foi descoberto rapidamente. (The error was discovered quickly.)
2. Ele ficou com o braço descoberto. (He was left with his arm uncovered.)
3. A nova rota foi descoberta pela equipe. (The new route was discovered by the team.)
4. Você está descoberto sem o casaco. (You are unprotected without the coat.)
5. O segredo foi descoberto por acaso. (The secret was discovered by chance.)

Continental Portuguese Examples:

1. O erro foi descoberto depressa. (The error was discovered quickly.)
2. Ele ficou com o braço descoberto. (He was left with his arm uncovered.)
3. A nova rota foi descoberta pela equipa. (The new route was discovered by the team.)
4. Estás descoberto sem o casaco. (You are unprotected without the coat.)
5. O segredo foi descoberto por acaso. (The secret was discovered by chance.)