ex nihilo [^eks,n^i'h^il,-o] adjective and adverb.

Coming from nothing; out of the blue.

{From Latin..........................................................................}

colloquium [k-o,l-o'kw-e,^um] noun.
plural: colloquia or colloquiums

1. An informal meeting meant to share opinions.
2. An academic conference on a general study.

{Latin....................................................................................}