Obs. [n. of action f. L. lassāre: see LASSATE a.] Relaxation; weariness.
1650. Charleton, Paradoxes, 139. The Imagination in this life is not onely subject to lassation.
1669. W. Simpson, Hydrol. Chym., 97. The animal spirits are … wearied and willingly give themselves up to a lassation.
