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n. pl. de·on·tol·o·gies
1. Ethical or moral theory concerned with duties and rights.
2. The doctrine that ethical status of an action lies in its adherence to a set of rules.
[Greek deon, deont-, obligation, necessity (from neuter present participle of dein, to need, lack; see deu-1 in the Appendix of Indo-European roots) + -logy.]
de·on′to·log′i·cal (-tə-lŏj′ĭ-kəl) adj.
(Philosophy) the branch of ethics dealing with duty, moral obligation, and moral commitment
[C19: from Greek deon duty (see deontic) + -logy]
de•on•tol•o•gy(ˌdi ɒnˈtɒl ə dʒi)
ethics dealing esp. with duty, moral obligation, and right action.
[1820–30; < Greek deont- that which is binding (s. of déon, neuter present participle of deîn to bind) + -o- + -logy]
de`on•to•log′i•cal (-tlˈɒdʒ ɪ kəl) adj.
the branch of philosophy concerned with ethics, especially that branch dealing with duty, moral obligation, and right action. — deontologist, n. — deontological, adj.See also: Ethics
The branch of ethics that deals with moral responsibility.