Nope, that's multilingual or polyglot.

Edit: I'm not here to comment on the bi/pan debate, and do not intend for my comment to extend to that debate. But the definition of "bilingual" (the subject of the question I'm answering) seems to be extremely clear on its specificity. From Merriam-Webster:

1: having or expressed in two languages

a bilingual document

an officially bilingual nation

2: using or able to use two languages especially with equal fluency

bilingual in English and Japanese

3: of or relating to bilingual education