fix a'tion

[L. fix us; figere, to fasten.] ±. The condition of being fixed or firmly attached or set. 3. The art of fixing or making firm. 3 In histology, the rapid killing of ti ue elements and their hardening, so that they are preserved in the same relations they had in the living body. 4. In chemistry, the solidification of a gas on uniting with a solid, f. of com'plement, see under complement, point of f., the point on the retina at which the rays coming from an object regarded directly are focu ed. re'nal f., an approach to uniformity in the rate of excretion and in the specific gravity of the urine, and delay or failure to respond by increased excretion to the ingestion of food.