ses·sion 
/ˈsɛʃən/ noun
plural ses·sions /ˈsɛʃən/ noun 1 [count] : a period of time that is used to do a particular activity
▪ a practice session ▪ Her health insurance will cover 12 one-hour sessions of therapy per year. ▪ a recording/photo session ▪ After the speech there will be a question and answer session. [=a period of time when people can have their questions answered] — see also bull session, jam session, rap session 2 : a formal meeting or series of meetings of a group of people (such as a court of law or legislature) [count] ▪ the U.N. Special Session on Disarmament [noncount] ▪ The board met in closed session [=with no one else present] for four hours to discuss the issue. ▪ Congress is in session [=is meeting] right now. 3 US : a period of time during the year in which a school, college, or university has classes [count] ▪ I'm going to take classes during the summer session. [noncount] ▪ School will be back in session at the beginning of September. [=school will start again at the beginning of September]
▪ a practice session ▪ Her health insurance will cover 12 one-hour sessions of therapy per year. ▪ a recording/photo session ▪ After the speech there will be a question and answer session. [=a period of time when people can have their questions answered] — see also bull session, jam session, rap session
