tetracyclic antidepressant

[tĕt′rə-sīklĭk, -sĭklĭk]

n.

Any of a class of antidepressants whose chemical structure includes four benzene rings.

The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.