1 a white, yellowish, or grey mineral consisting of hydrated aluminium oxide in orthorhombic crystalline form, found in bauxite and corundum. Formula: Al2O3.H2O
2 any propagative part of a plant, esp. one that is easily dispersed, such as a spore
(C19: from Greek diaspora a scattering, dispersion; see Diaspora: so named from its dispersion and crackling when highly heated)
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