continuation

(noun) the act of continuing an activity without interruption. Synonyms: continuance.

(noun) a part added to a book or play that continues and extends it. Synonyms: sequel.

(noun) a Gestalt principle of organization holding that there is an innate tendency to perceive a line as continuing its established direction. Synonyms: good continuation, law of continuation.

(noun) the consequence of being lengthened in duration. Synonyms: lengthiness, prolongation, protraction.