plural sessions
1
: 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]
2
: a formal meeting or series of meetings of a group of people (such as a court of law or legislature)
the U.N. Special Session on Disarmament
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
I'm going to take classes during the summer session.
School will be back in session at the beginning of September. [=school will start again at the beginning of September]
Cite this Entry
“Session.” Merriam-Webster.com Simple Definition, Merriam-Webster, https://www.merriam-webster.com/simple/session. Accessed 20 Jun. 2026.
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