group therapy

from The American Heritage® Dictionary of the English Language, 5th Edition.

• noun A form of psychotherapy that involves sessions guided by a therapist and attended by several clients who confront their personal problems together. The interaction among clients is considered an integral part of the therapeutic process.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• noun group psychotherapy, a form of therapy where patients are treated as a group, using group dynamics.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

• noun psychotherapy in which a small group of individuals meet with a therapist; interactions among the members are considered to be therapeutic