Abscission means the act of cutting off or separating, commonly used in biology to describe the natural shedding of leaves, fruits, or flowers from plants. The term derives from Latin 'abscissio' meaning 'a cutting off'. Option A is incorrect because abscission refers to separation, not division into parts. Option B describes a 'supplicant' (one who supplicates), not abscission. Option D describes a satellite or moon, not a cutting-off process.