संस्‍कृतशब्‍दकोशः

कालघातिन्

धीरे धीरे मारने वाला, टूक टूक मारने वाला

killing by degrees

Monier–Williams

कालघातिन् — {ghātin} mfn. (said of a poison) killing in the course of time (i.e. by degrees, slowly) Suśr