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Element #89
Answer for the clue "Element #89 ", 8 letters:
actinium
Alternative clues for the word actinium
Word definitions for actinium in dictionaries
WordNet
Word definitions in WordNet
n. a radioactive element of the actinide series; found in uranium ores [syn: Ac , atomic number 89 ]
The Collaborative International Dictionary
Word definitions in The Collaborative International Dictionary
Actinium \Ac*tin"i*um\, n. [Gr. ?, ?, ray.] (Chem.) A supposed metal, said by Phipson to be contained in commercial zinc; -- so called because certain of its compounds are darkened by exposure to light.
Douglas Harper's Etymology Dictionary
Word definitions in Douglas Harper's Etymology Dictionary
radioactive element discovered in 1899, from Greek actin- , comb. form of aktis (genitive aktinos ) "ray, radiance" (see actino- ) + chemical suffix -ium .
Wikipedia
Word definitions in Wikipedia
Actinium is a radioactive chemical element with symbol Ac (not to be confused with the abbreviation for an acetyl group ) and atomic number 89, which was discovered in 1899. It was the first non-primordial radioactive element to be isolated. Polonium , ...
Wiktionary
Word definitions in Wiktionary
n. a radioactive, metallic chemical element (''symbol'': Ac) with an atomic number of 89; found in uranium ores
Usage examples of actinium.
The Sherlock and the Watson floated alongside the offloaded actinium waiting for a lighter to arrive and recover the stolen merchandise.
If you consider an alphabetical listing of the elements, actinium, element number eighty-nine, is first on the list, and zirconium, element number forty, is the last on the list.
It was a compound of actinium, a substance far more radioactive than radium, but of lesser duration.
THE SHADOW folded the actinium powder in a small piece of paper that he found in the wastebasket.
By that time, his actinium powder would be as traceless as it had been with Rune.
He had developed actinium compounds that could kill - as demonstrated in the cases of Rune and Farradon.
The Sherlock and the Watson floated alongside the offloaded actinium waiting for a lighter to arrive and recover the stolen merchandise.
The intermediate elements referred to in this radioactive decay chain are lead (symbol Pb, element 82), polonium (Po, element 84), astatine (At, element 85), francium (Fr, element 87), radium (Ra, element 88), actinium (Ac, element 89), thorium (Th, element 90), protoactinium (Pa, element 91), uranium (U, element 92), neptunium (Np, element 93), and americium (Am, element 95).