Main Entry: pat·tern

Pronunciation: \ˈpat-ərn\

Function: noun

1 : a model for making a mold used to form a casting
2 : a reliable sample of traits, acts, tendencies, or other observable characteristics of a person, group, or institution <patterns of behavior>
3 : an established mode of behavior or cluster of mental attitudes, beliefs, and values that are held in common by members of a group