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

Yes

The only difference between "extraordinárias" in Brazilian Portuguese and Continental Portuguese is pronunciation.

• Meaning and Spelling: The meaning, grammar, and spelling are identical in both dialects. Both use the word to describe something that is out of the ordinary, exceptional, or amazing.
• Pronunciation: In Brazilian Portuguese, the vowels are typically more "open" and the syllables are more clearly articulated. In Continental Portuguese, there is a strong tendency toward vowel reduction, where unstressed vowels are "swallowed" or pronounced more closed, making the word sound more clipped.

Brazilian Portuguese Examples

1. Elas são pessoas extraordinárias. (They are extraordinary people.)
2. Tivemos notícias extraordinárias hoje. (We had extraordinary news today.)
3. As suas ideias são realmente extraordinárias. (Your ideas are truly extraordinary.)
4. As oportunidades que surgiram foram extraordinárias. (The opportunities that arose were extraordinary.)
5. Ela tem habilidades extraordinárias para a música. (She has extraordinary skills for music.)

Continental Portuguese Examples

1. Elas são pessoas extraordinárias. (They are extraordinary people.)
2. Recebemos notícias extraordinárias hoje. (We received extraordinary news today.)
3. As tuas ideias são realmente extraordinárias. (Your ideas are truly extraordinary.)
4. As oportunidades que surgiram foram extraordinárias. (The opportunities that arose were extraordinary.)
5. Ela tem competências extraordinárias para a música. (She has extraordinary skills for music.)