ACTINISM • DICCIONARIO INGLES.COM • Definition of Actinism

... third day will be satisfactorily accounted for. There is, however, still an enormous amount of mystery connected with the sun. It is the centre from which an inconceivable amount of force in the shape of light, heat, actinism, and probably other manifestations, is hourly poured forth. If the whole of that force were divided into two thousand million parts, the portion received by the earth would be represented by one of those parts, and the whole amount received by ...

— The Story of Creation as told by Theology and by Science • T. S. Ackland