Definitions for "Catagen"
a brief middle stage in the hair growth cycle, between active (anagen) and inactive (telogen) stages.
end of active growing phase of the life cycle of the hair, between growing phase (anagen) and resting stage (telogen). (More? Integumentary Development - Hair)
The transitional phase of the hair follicle from the active growth phase (anagen) to the resting growth phase (telogen) in the hair growth cycle.