subrule
nounEtymology From sub- + rule.
1
A narrow rule which defines the specific meaning of a broader rule
- This led to a set of rules (play cannot begin before crossing East Blithedale Avenue), then subrules ("crossing" means reaching the always arguable halfway point of the avenue) […2009 January 8, Michelle Slatalla, “Two Can Play That Game”, in New York Times:
- Related terms
- corollary, subcorollary