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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 ?
Although dispersal is probably mainly by gravity, the diaspores can also float for several days before becoming waterlogged and sinking (Conran pers.
Soon after, each filter-paper disk received 50 diaspores from the target-species (lettuce/onion), randomly arranged, with four replications for each treatment, according to Brasil (1992).
Interactions between ants and the diaspores of some common spring-flowering herbs in West Virginia.
Dans cet article, l'auteure examine deux recits diaspores de l'Asie-pacifique traitant d'enfants d'immigrants : Among the White Moon Faces: An Asian-American Memoir of Homeland, de Shirley Geok-lin Lim et Volcano: A Memoir of Hawai'i, de Garrett Hongo.
Wild poinsettia diaspores were scarified in pure sulfuric acid for five seconds and then washed in running water to standardize the seed integuments (AZANIA et al.
Morphological patterns of diaspores from animal-dispersed tree and treelet species at Parque Estadual de Itapua, Rio Grande do Sul State, Brazil.
The effects of morphology, orientation and position of grass diaspores on seedling survival.
These authors have reported that the imbibition of the diaspores in water (28[degrees]C) for 48 hours or the removal of the endocarp did not increase the germination percentage (41 and 37%, respectively), and the results were not different from the control diaspores, which reached 46% germination.
Mass allocation, moisture content, and dispersal capacity of wind-dispersed tropical diaspores.
In this context, this study aimed to evaluate the allelopathic potential of aqueous extracts of young and mature leaves of Sapindus saponaria on the germination of diaspores and growth of seedlings of Echinochloa crus-galli (L.
The feasibility of intercontinental sedge dispersal by migrating waterfowl was shown by de Vlaming and Proctor (1968) who demonstrated viability of Carex and other sedge diaspores after more than 24h in the digestive systems of mallard ducks and suggested that these highly resistant seeds were an adaptive trait in wetland sedges.