einsteinium

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einsteinium

(Es) [īn-sti´ne-um]

a chemical element, atomic number 99, atomic weight 254. (See Appendix 6.)

ein·stein·i·um (Es),

(īn-stīn'ē-ŭm),

An artificially prepared transuranium element, atomic no. 99, atomic wt. 252.0; it has many isotopes, all of which are radioactive (²⁵²Es has the longest known half-life, 1.29 years).

[Albert Einstein]

ein·stein·i·um

(īn-stī'nē-ŭm)

An artificially prepared transuranium element, atomic no. 99, atomic wt. 252.0; it has many isotopes, all of which are radioactive (²⁵²Es has the longest known half-life, 1.29 years).

[Albert Einstein]

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References in periodicals archive ?

After the war, Seaborg and his colleagues continued their research on the transuranium elements, discovering such elements as berkelium, californium, einsteinium, fermium, mendelevium, and nobelium.

Board member Glenn T. Seabord dies

I may know that I believe that Einsteinium is an element and know that I believe that Fermium is an element, but I may wonder whether these two beliefs are really just one, partially on account of the possibility that "Fermium" is just another name for Einsteinium.

Defending Millian theories

If rerouting formerly greeted cylinders evoked glistening alarm, they would simply extract wiggly einsteinium after counting aqua vitae as one o' the boyz.