actinium, Ac, atomic number
(noun) a radioactive element of the actinide series; found in uranium ores
Source: WordNet® 3.1
actinium (uncountable)
a radioactive, metallic chemical element (symbol: Ac) with an atomic number of 89; found in uranium ores
Source: Wiktionary
Ac*tin"i*um, n. Etym: [Gr. (Chem.)
Definition: 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.
Source: Webster’s Unabridged Dictionary 1913 Edition
25 December 2024
(adjective) having or exhibiting a single clearly defined meaning; “As a horror, apartheid...is absolutely unambiguous”- Mario Vargas Llosa
According to Guinness World Records, the largest iced coffee is 14,228.1 liters and was created by Caffé Bene (South Korea), in Yangju, South Korea, on 17 July 2014. They poured iced black Americano on the giant cup that measured 3.3 meters tall and 2.62 meters wide.
