springing

n. 1. The act or process of one who, or that which, springs. [ 1913 Webster ]

2. Growth; increase; also, that which springs up; a shoot; a plant. [ 1913 Webster ]

Thou blessest the springing thereof. Ps. lxv. 10. [ 1913 Webster ]

Springing line of an arch (Arch.), the horizontal line drawn through the junction of the vertical face of the impost with the curve of the intrados; -- called also spring of an arch. [ 1913 Webster ]