diaspore


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di·a·spore

 (dī′ə-spôr′)
n.
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.]

diaspore

(ˈdaɪəˌspɔː)
n
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]

di•a•spore

(ˈdaɪ əˌspɔr, -ˌspoʊr)

n.
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 ?
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.
General Properties - 1) Raw Material Base: Calcined Diaspore 2)Max Service Temp 1600 Degree Centigrade 3)Max Grain Size 0 To 5 Mm 4) Thermal Expansion 0 5 To 0 6% At 1000 Degree Centigrade 5) Chemical Analysis: Al203 56 To 60%.
Indigenous diaspore is a high density hard mineral.
Most common was diaspore [[alpha]-AlO(OH)], with peaks at 216, 287, 329, 447 (strongest), 497, 665, 794 and 1191 [cm.
22) "Migration, Remittances, and Diaspore," World Bank, http://www.
X-ray diffraction (XRD) analyses show that the Zan laterites consist of kaolinite, diaspore, hematite, goethite, boehmite, anatase, siderite, rutile, and quartz.
Gabaccia DR (2003) Emigranti, le diaspore degli Italiani dal medioevo a oggi.
Propagule and diaspore are two other terms for botanical procreative packages.
It consists largely of the minerals gibbsite Al (OH)3, boehmite g-AlO(OH) and diaspore a-AlO(OH), together with the iron oxides goethite and hematite, the clay mineral kaolinite and small amounts of anatase TiO2.