Is “Colloquium” a Scrabble word?
Yes
COLLOQUIUM
Valid in at least one Scrabble dictionary
Valid in these dictionaries
SOWPODS / CSW
Scrabble UK & International
TWL / NWL
Scrabble North America
Large English Dictionary
General English word list
Meaning of Colloquium
/kəˈləʊkwiːəm/
noun
1.A colloquy; a meeting for discussion.
2.An academic meeting or seminar usually led by a different lecturer and on a different topic at each meeting.
3.An address to an academic meeting or seminar.