col·lo·qui·um 
(kə-lōkwē-əm)
(kə-lōkwē-əm)n. pl. col·lo·qui·ums or col·lo·qui·a (-kwē-ə)
1. An informal meeting for the exchange of views.
2. An academic seminar on a broad field of study, usually led by a different lecturer at each meeting.
[Latin, conversation, from colloquī, to talk together : com-, com- + loquī, to speak; see tolkw- in the Appendix of Indo-European roots.]