de·on·tol·o·gy/ˌdēänˈtäləjē/Learn to pronouncenounPHILOSOPHYnoun: deontology
- the study of the nature of duty and obligation.
Origin

early 19th century: from Greek deont- ‘being needed or necessary’ (from dei ‘it is necessary’) + -logy.
de·on·tol·o·gy/ˌdēänˈtäləjē/Learn to pronouncenounPHILOSOPHYnoun: deontology
Origin

early 19th century: from Greek deont- ‘being needed or necessary’ (from dei ‘it is necessary’) + -logy.