(mathematics) Of a function, capable of being constructed from the zero function, successor function, and projection functions, by a finite number of applications of composition and recursion.

(law) The most serious offence of a group of offenses that a person committed at the same time, or is charged with committing at the same time.

(Britain, education) A formal, obligatory kind of school that typically begins with nursery school or first grade and ends at fifth or sixth grade.

plural of primary offense

plural of primary school

The plant privet.

A polyhedral cell in the epidermis having many spines that form intercellular bridges.

(television, radio) The block of programming on television during the middle of the evening, usually between 7:00 pm and 11:00 pm. / The busiest or most important period.

(television, radio) Showing during prime time.

(economics) The price at which a product, financial instrument, service or other tradable item can be bought and sold at an open market; the going price.