n.
1.a group of symbols that make a mathematical statement
2.directions for making something
3.a conventionalized statement expressing some fundamental principle
4.a representation of a substance using symbols for its constituent elements
5.something regarded as a normative example
6.a liquid food for infants
7.(mathematics) a standard procedure for solving a class of mathematical problems
Idiom of the Day
have a brush with (something)
to have a brief experience with something (law, death etc.)
I had a brush with the law when my car was stopped for speeding.