1. [ adjective ] first or beginning

"the memorable opening bars of Beethoven's Fifth" "the play's opening scene"

Related terms: closing inaugural beginning introductory starting
2. [ noun ] an open or empty space in or between things
Synonyms: gap

"there was a small opening between the trees" "the explosion made a gap in the wall"

Related terms: space hole crack rip mouth rift window chasm foramen nodes_of_ranvier breach pocket surface
3. [ noun ] a ceremony accompanying the start of some enterprise
Related terms: ceremony open
4. [ noun ] becoming open or being made open

"the opening of his arms was the sign I was waiting for"

Related terms: change_of_integrity cut unfold
5. [ noun ] (theater) the first performance (as of a theatrical production)
Synonyms: curtain_raising opening_night

"the opening received good critical reviews"

Related terms: start
6. [ noun ] the act of opening something

"the ray of light revealed his cautious opening of the door"

Related terms: shutting motion open
7. [ noun ] (fine art,writing) the initial part of the introduction

"the opening established the basic theme"

Related terms: introduction teaser salutation
8. [ noun ] a vacant or unobstructed space that is man-made

"they left a small opening for the cat at the bottom of the door"

Related terms: artifact hole window slit gun_muzzle gap gun_muzzle throat exit port wicket fly spout interstice intake breech mouth lunette neckline neck bell window aperture
9. [ noun ] (nautical) an entrance equipped with a hatch; especially a passageway between decks of a ship
Synonyms: hatchway scuttle
Related terms: entrance escape_hatch hatch open
10. [ noun ] opportunity especially for employment or promotion

"there is an opening in the sales department"

Related terms: opportunity open
11. [ noun ] (psychology) a possible alternative
Synonyms: possibility possible_action

"bankruptcy is always a possibility"

Related terms: option possible
12. [ noun ] (anatomy,zoology) an aperture or hole opening into a bodily cavity
Synonyms: orifice porta

"the orifice into the aorta from the lower left chamber of the heart"

Related terms: passage mouth os vent cervix cardia aortic_orifice fenestra urethral_orifice spiracle blastopore anus pylorus naris fontanelle porta_hepatis introitus rima stoma ostium open
13. [ noun ] the first of a series of actions
Synonyms: first_step initiative opening_move

"he memorized all the important chess openings"

Related terms: beginning curtain_raiser first_base peace_initiative open
Similar spelling:   opinion