S: (n) breakaway, breaking away (the act of breaking away or withdrawing from) "there was a breakaway by the discontented members"; "a breaking away from family and neighborhood"
S: (n) cut, cutting (the division of a deck of cards before dealing) "he insisted that we give him the last cut before every deal"; "the cutting of the cards soon became a ritual"
S: (n) extraction (the action of taking out something (especially using effort or force)) "the dentist gave her a local anesthetic prior to the extraction"
S: (n) autotomy (spontaneous removal or casting off of a body part (as the tail of a lizard or claw of a lobster) especially when the organism is injured or under attack)
S: (n) oversimplification, simplism (an act of excessive simplification; the act of making something seem simpler than it really is)
S: (n) rationalization, rationalisation ((mathematics) the simplification of an expression or equation by eliminating radicals without changing the value of the expression or the roots of the equation)
S: (n) elimination (the act of removing an unknown mathematical quantity by combining equations)
S: (n) subdivision (the act of subdividing; division of something previously divided)
S: (n) septation (the division or partitioning of a cavity into parts by a septum)
S: (n) zoning (dividing an area into zones or sections reserved for different purposes such as residence and business and manufacturing etc)
S: (n) divergence, divergency (the act of moving away in different direction from a common point) "an angle is formed by the divergence of two straight lines"
S: (n) withdrawal (the act of ceasing to participate in an activity)
S: (n) Secession (the withdrawal of eleven southern states from the Union in 1860 which precipitated the American Civil War)
S: (n) change (the action of changing something) "the change of government had no impact on the economy"; "his change on abortion cost him the election"
S: (n) action (something done (usually as opposed to something said)) "there were stories of murders and other unnatural actions"