Entry 2 senses · 2 variants Webster, 1913 Causally · Caus·al·ly · IPA adv. n. 01 adv. According to the order or series of causes; by tracing effects to causes. 1. According to the order or series of causes; by tracing effects to causes. 02 n. The lighter, earthy parts of ore, carried off washing. 1. The lighter, earthy parts of ore, carried off washing.(Mining.)