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1. The act or process of one who, or that which, springs.

2. Growth; increase; also, that which springs up; a shoot; a plant. Thou blessest the springing thereof. (Ps. Lxv. 10) Springing line of an arch, the horizontal line drawn through the junction of the vertical face of the impost with the curve of the intrados.

Synonym: spring of an arch.