Editing is the art of putting a film together without noticing.

Editing: Editing is apart of the post-production part of the film-making process. The purpose of editing is to show the final product to an audience without them seeing any imperfections.

Editing: The art of editing allows the filmmakers to bring the final product to the audience, without the audience knowing about any of the imperfections. While editing, the editor puts together various shots to produce a sequence, these sequences will then be put together in order to create a film.

http://amirediting.blogspot.com/p/editing-is-part-of-post-production-that.html

Editing: The relationship between shots and the process by which they’re combined post-production [This includes deleting, arranging and splicing clips so the audience doesn’t see any mistakes/imperfections]

Editing- a stage in post-production where shots are cut, deleted, and assembled to create the finished video product, often done using digital software. It can also include the addition of sound, music and visual elements to fulfil the director’s vision.

to prepare (motion-picture film, video, or magnetic tape) by deleting, arranging, and splicing, by synchronizing the sound record with the film, The term is derived from the traditional process of working with film which increasingly involves the use of digital technology.

selecting the scenes to be shown and putting them together to create a film, allows filmmakers to get rid of imperfections

Editing in film is when a scene is cut, deleted or in what order the scenes are placed. Editing also adds text to the screen and can add sound/music to the product too. Filmmakers do this to remove any imperfections/mistakes in the shots to make the best quality film for the consumer. Editing is a part of post-production. The clips which are being editing are called ‘rushes’ when they’re raw footage. Editing is done using a digital programme, most commonly premier pro(Adobe). Before digital editing they cut the actual film and put them together to create a single film. To create sound for the film, generally someone would play the piano while the film is playing.

Film editing is both a creative and a technical part of the post production process of filmmaking. The term is derived from the traditional process of working with film which increasingly involves the use of digital terminology.

The film editor works with the raw footage, selecting shots and combining them into sequences which create a finished motion picture.

Film editing is both a creative and a technical part of the post-production process of filmmaking. The term is derived from the traditional process of working with film which increasingly involves the use of digital technology. 

https://en.wikipedia.org/wiki/Film_editing