the first performance of a theatrical attraction, taking place in the evening:
The audience was full of celebrities on opening night.
- Opening credits
noun a list of the most prominent people involved in a television broadcast or film, shown at the beginning of the program; also, this portion of the program; compare closing credits See closing credits Word Origin 1931
- Opening snap
opening snap n. A sharp, high-pitched click in early diastole, associated with the opening of the abnormal valve in cases of mitral stenosis.
programming, database The workflow-enabled Windows 95/Windows NT version of Advanced Revelation, featuring native support for Lotus Notes, Microsoft SQL Server, Oracle and ODBC. OpenInsight is available from Revelation Software. (1997-04-25)
- Open interval
open interval A set of numbers consisting of all the numbers between a pair of given numbers but not including the endpoints.