ˈphrenosinChem. [f.Gr. ϕρήν, ϕρεν- mind + -ose + -in1 (after myosin).] A substance (C34H67NO8) obtained from the brain. 1878Kingzett Anim.Chem. xv. 305 To the first of these Thudichum reserves the name of cerebrine, the second he terms phrenosine, and the third kerasine.