(So named (Greek dysprositos, "difficult of access") in 1886 by its discoverer, French chemist Paul-Émile Lecoq de Boisbaudran) A silver-white chemical element, one of the rare-earth metals, with a great capacity to absorb neutrons and with strong magnetic properties, especially at very low temperatures.
Dys*pro"si*um (?), n. [NL., fr. Gr. dyspro`sitos hard to get at.] (Chem.)
An element of the rare earth-group. Symbol Dy; at. wt., 162.5.
© Webster 1913
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