[f. as prec. + -ISM.]
1. The theory which refers all diseases to the state of the fluids in the body.
18356. R. B. Todd, The Cyclopædia of Anatomy and Physiology, I. 416/1. The further we extend our knowledge of pathology, the less shall we feel inclined to admit the exclusive claims either of fluidism or solidism.
1860. Worcester, Fluidism, the doctrine of those who refer all diseases to alterations of the fluids of the body.
2. Spiritualism. The hypothesis of the existence of supersensible fluidic bodies (see FLUIDIC 2).
So Fluidist [see -IST], one who supports the hypothesis of fluidism (in either sense).
1888. Amer. Jrnl. Psychol., I. May, 500. All such facts favor the fluidists.