an ethical belief or system of beliefs supposed to be inherent in human nature and discoverable by reason rather than revelation
2.
a nonlogically necessary truth; law of nature
See also nomological (sense 2)
3.
the philosophical doctrine that the authority of the legal system or of certain laws derives from their justifiability by reason, and indeed that a legal system which cannotbe so justified has no authority
natural law in American English
noun
a principle or body of laws considered as derived from nature, right reason, or religion and as ethically binding in human society
Compare positive law
Word origin
[1350–1400; ME]
Examples of 'natural law' in a sentence
natural law
It follows natural laws of nature.
Lutzner, Dr Helmut Successful Fasting -the easy way to cleanse your body of its poisons (1990)