o·pen·ing 
(ōpə-nĭng)
(ōpə-nĭng)n.
1. The act or an instance of becoming open or being made to open: the opening of the tomb.
2.
a. A gap, breach, or aperture: slipped through an opening in the hedge.
b. A clearing in the woods.
3.
a. The first part or stage, as of a book.
b. The first performance: the opening of a play.
c. A formal commencement of operation: attended the opening of the new museum.
d. A specific pattern or series of beginning moves in certain games, especially chess.
4.
a. An opportunity affording a chance of success. See Synonyms at opportunity.
b. An unfilled job or position; a vacancy.
- disestablishmentarian
- disestablishmentarianism
- disesteem
- diseur
- diseuse
- disfavor
- disfeature
- disfeaturement
- disfiguration
- disfigure
- disfigurement
- disfranchise
- disfranchisement
- disfranchiser
- disfrock
- disgorge
- disgorgement
- disgrace
- disgraceful
- disgracefully
- disgracefulness
- disgracer
- disgruntle
- disgruntlement
- disguise