. | 1. | Music. relative rapidity or rate of movement, usually indicated by such terms as adagio, allegro, etc., or by reference to the metronome. |
| 2. | characteristic rate, rhythm, or pattern of work or activity: the tempo of city life. |
| 3. | Chess. the gaining or losing of time and effectiveness relative to one's continued mobility or developing position, esp. with respect to the number of moves required to gain an objective: Black gained a tempo. |

In music, the speed at which a piece is performed. It is the Italian word for “time.”
TEMPO
A programming language with simple syntax and semantics designed for teaching semantic and pragmatic aspects of programming languages.
["TEMPO: A Unified Treatment of Binding Time and Parameter Passing Concepts in Programming Languages", N.D. Jones et al, LNCS 66, Springer 1978].
Tempo operating system
The original code name for Mac OS version 8.
(1997-10-15)