Definition of tetracyclic in English:

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tetracyclic

Pronunciation: /ˌtetrəˈsīklik/

adjective

Chemistry
(Of an organic compound) having four fused rings of atoms in its molecule.
Example sentences
  • Cucurbitacins are oxygenated tetracyclic triterpenes that have been shown to have emetic, antineoplastic, and cytotoxic effects on herbivores, resulting in feeding and oviposition deterrence and reduced growth of consumers.
  • A 1998 study showed that pentacyclic alkaloids weakly activated human B- and T-lymphocytes, and that tetracyclic oxindole alkaloids reduced the activity of pentacyclic oxindoles.
  • Mirtazapine is a tetracyclic antidepressant unrelated to tricyclic antidepressants and SSRIs.

Origin

Early 20th century: from tetra- 'four' + Greek kuklos 'circle' + -ic.

For editors and proofreaders

Syllabification: tet·ra·cy·clic

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