Is the word terça-feira the same in Brazilian and European Portuguese?

Yes

The meaning, spelling, and grammar of "terça-feira" are identical in both Brazilian and Continental Portuguese. The only differences lie in pronunciation:

• Brazilian Portuguese: The vowels tend to be more "open" and clearly articulated. In many Brazilian dialects, the "e" in "feira" is pronounced clearly, and the rhythm of the sentence is more melodic (syllable-timed).
• Continental Portuguese: The pronunciation is more "closed." Speakers often reduce or almost "swallow" unstressed vowels. For example, the "e" in "feira" might be very short or nearly silent, making the word sound more clipped (stress-timed).

Brazilian Portuguese Examples

In Brazil, it is very common to use the shortened "terça" in casual conversation.

1. A gente se vê na terça. (We'll see each other on Tuesday.)
2. Eu tenho médico na terça-feira de manhã. (I have a doctor's appointment on Tuesday morning.)
3. A aula começa na terça. (Class starts on Tuesday.)
4. Você pode vir aqui na terça-feira? (Can you come here on Tuesday?)
5. Não posso ir, já tenho compromisso na terça. (I can't go, I already have a commitment on Tuesday.)

Continental Portuguese Examples

In Portugal, speakers often use different pronouns (like "vmo-nos" instead of "a gente se vê") and different prepositions or adverbs (like "cá" instead of "aqui").

1. Vemo-nos na terça. (We'll see each other on Tuesday.)
2. Tenho uma consulta na terça-feira. (I have an appointment on Tuesday.)
3. A aula começa na terça-feira. (Class starts on Tuesday.)
4. Podes vir cá na terça? (Can you come here on Tuesday?)
5. Não posso, tenho um compromisso na terça. (I can't, I have a commitment on Tuesday.)