[f. next + -ATION.] The action or process of externalizing; an instance of this; also concr. an embodiment.
1803. W. Taylor, in Monthly Mag., XIV. 491. As a telescope is a copy or externalization of the process of vision; so written language may be a copy or externalization of the process of thinking.
1855. Frasers Mag., LI. 379. The externalisation of the will.
1877. Mallock, New Republic, IV. i. II. 127. Such a city would be the externalisation of the human spirit in the highest state of development.