Tricyclic

adj, noun

Definitions

Adjective
  1. 1
    Having three rings of atoms in the molecule. not-comparable

    "a tricyclic antidepressant"

  2. 2
    Of a flower: composed of three whorls or organs. not-comparable
Noun
  1. 1
    Any tricyclic compound.
  2. 2
    an antidepressant drug that acts by blocking the reuptake of norepinephrine and serotonin and thus making more of those substances available to act on receptors in the brain wordnet

Etymology

Etymology 1

From tri- + cyclic.

Etymology 2

From tri- + cyclic.

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