Definition of tetracyclic in English:

tetracyclic

adjective ˌtɛtrəˈsʌɪklɪkˌtɛtrəˈsɪklɪkˌtetrəˈsīklik

Chemistry

(of a compound) having a molecular structure of four fused hydrocarbon rings.
Example sentencesExamples
- 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.
- 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.
- Practitioners prescribing the tetracyclic antibiotics should be aware of the syndrome of increased intracranial pressure, and pay particular attention to the ocular fundus for papilloedema.
- Maprotiline is the only tetracyclic antidepressant available in the US.

Origin

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

Definition of tetracyclic in US English:

tetracyclic

adjectiveˌtetrəˈsīklik

Chemistry

(of an organic compound) having four fused rings of atoms in its molecule.
Example sentencesExamples
- 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.
- Practitioners prescribing the tetracyclic antibiotics should be aware of the syndrome of increased intracranial pressure, and pay particular attention to the ocular fundus for papilloedema.
- Maprotiline is the only tetracyclic antidepressant available in the US.
- Mirtazapine is a tetracyclic antidepressant unrelated to tricyclic antidepressants and SSRIs.

Origin

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

词汇	tetracyclic
释义	Definition of tetracyclic in English: tetracyclic adjective ˌtɛtrəˈsʌɪklɪkˌtɛtrəˈsɪklɪkˌtetrəˈsīklik Chemistry (of a compound) having a molecular structure of four fused hydrocarbon rings. Example sentencesExamples 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. 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. Practitioners prescribing the tetracyclic antibiotics should be aware of the syndrome of increased intracranial pressure, and pay particular attention to the ocular fundus for papilloedema. Maprotiline is the only tetracyclic antidepressant available in the US. Origin Early 20th century: from tetra- ‘four’ + Greek kuklos ‘circle’ + -ic. Definition of tetracyclic in US English: tetracyclic adjectiveˌtetrəˈsīklik Chemistry (of an organic compound) having four fused rings of atoms in its molecule. Example sentencesExamples 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. Practitioners prescribing the tetracyclic antibiotics should be aware of the syndrome of increased intracranial pressure, and pay particular attention to the ocular fundus for papilloedema. Maprotiline is the only tetracyclic antidepressant available in the US. Mirtazapine is a tetracyclic antidepressant unrelated to tricyclic antidepressants and SSRIs. Origin Early 20th century: from tetra- ‘four’ + Greek kuklos ‘circle’ + -ic.
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