diffusantn.
/dᵻˈfjuːznt/, U.S. /dəˈfjuz(ə)nt/ Chiefly Chemistry and Medicine.
A substance which diffuses through another.
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agent1624
analyser1661
pyrophorus1734
pyrophore1788
frigoric1812
diffusate1850
diffusant1867
cryogen1875
metachrome1876
carrier1902
getter1912
active1918
network former1947
network modifier1947
radiosensitizer1953
monophase1968
1867 Trans. Eclectic Med. Soc. N.Y. 1866 270 in Docs. Assemble State of N.Y. (90th Session, Doc. No. 100) It acts not only as a renal hydragogue, but as a renal diffusant.
1930 Jrnl. Amer. Chem. Soc. 52 1305 (caption) Mol. wt. of diffusant.
1979 National Gallery Techn. Bull. 2 45/1 We mount a film so that there is more oxygen (or other diffusant) on one side of it than on the other.
2012 S. Matsuoka & T. K. Kwei in F. Bovey Macromolecules v. 404 The diffusion constants are, as a rule, functions of both the temperature and the concentration of the organic diffusant c in the system.
This is a new entry (OED Third Edition, June 2016; most recently modified version published online March 2022).
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n.1867