abscise
verb
ab·scise ab-ˈsīz 
abscised; abscising
transitive verb
: to separate (something, such as a flower from a stem) by abscission
intransitive verb
: to separate by abscission
Word History
Etymology
Middle English abscisen "to cut away," borrowed from Latin abscīsus, past participle of abscīdere "to cut off or away, remove," from abs- (variant of ab- ab- before c- and t-) + caedere "to strike, cut through, fell"; in later use back-formation from abscision, taken as synonym of abscission — more at concise
First Known Use
1612, in the meaning defined at transitive sense