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1. A white, pearly hydrous aluminum oxide, AlO(OH), found in bauxite, corundum, and dolomite and used as a refractory and abrasive.
2. Botany See disseminule.

[From Greek diasporā, dispersion, scattering; see Diaspora.]


1. (Minerals) a white, yellowish, or grey mineral consisting of hydrated aluminium oxide in orthorhombic crystalline form, found in bauxite and corundum. Formula: AlO(OH)
2. (Botany) 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]


(ˈdaɪ əˌspɔr, -ˌspoʊr)

a hydrous oxide of aluminum, AlO(OH), occurring as a mineral in white to greenish crystals or in foliated masses.
[< French (1801); see Diaspora]
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References in periodicals archive ?
Diaspores were classified according to Van der Pijl (1982) as anemochorous (winged or plumed diaspores), zoochorous (scattered by animals), or autochorous (dispersed by explosion or gravity).
Diaspores of parsnip (Pastinaca sativa) and radish (Raphanus sativus var.
For example, in wind dispersal, release height of the diaspore is a key factor of the dispersal equation, with diaspores released from tall plants traveling farther than those released from short plants (Howe & Smallwood, 1982; Willson & Traveset, 2000; Nathan & Katul, 2005; Thomson et al.
Additionally, larger islands have a higher probability to receive diaspores than smaller ones and might provide a comparatively greater potential for in situ speciation because larger islands provide geographic features (such as mountain ranges or rivers) that are important for in situ speciation [31].
Diaspores were collected at the Estacao Ecologica de Caiua, state of Parana, Brazil (52[degrees] 49' - 52[degrees] 53' W and 22[degrees] 34' - 22[degrees] 37' S).
and produce high amounts of diaspores, which may favour the re-infestation (Carvalho et al.
Glassman seeds presented 160 units, which number is lower than that observed by Brasil (2009), with 448 units, or in works by Leite (2001), with average of 497 diaspores and lopes (2007) with Syagrus vagans (Bondar) A.
In this context, this study aimed to determine water desorption isotherms of pequi diaspores, in order to obtain information on the amount of water that this product desorbs at the temperatures of 10, 20, 30 and 40 [degrees]C and water activities from 0.
They contain 1-5 diaspores, which consist of one or two seeds united by the aril.