The word "session" refers to a period of time that has been set aside for some specific purpose or activity. It is used to refer to the meetings that are held by some judicial or legislative body for the purpose of some business that is to be transacted. It can refer to a number of such meetings that are to be held. In the academic field the part of a particular day or a year in general in which a college, university or school holds its lectures or classes. It can be used to refer to the time spent with a doctor, physician, yoga, exercising, recording music, auditioning etc. Session is also a type of court found in the United States of America.
The word "session" comes from the Middle English and was taken from the Old French and derived from the Latin word "session" meaning the actual act of sitting.