[mod. f. Gr. ἀλλότροπ-ος (see ALLOTROPY) + -ISM.] Allotropy viewed as a principle or process.
1851. Art Jrnl. Catal. Exhib., II. v*/2. The allotropism, as this peculiar state has been called by Berzelius, of charcoal, plumbago and the diamond.
1858. Lewes, Sea-side Studies, 211. Chemical changes, both of decomposition and allotropism.
1881. Lockyer, in Nature, No. 617. 397/2. The substances in which allotropism is most marked are all metalloids which have not been found in the sun.
