/peuh tas"ee euhm/ , n. Chem.
a silvery-white metallic element that oxidizes rapidly in the air and whose compounds are used as fertilizer and in special hard glasses. Symbol: K; at. wt.: 39.102; at. no.: 19; sp. gr.: 0.86 at 20°C.
[ 1800-10; ]
/peuh tas"ee euhm/ , n. Chem.
a silvery-white metallic element that oxidizes rapidly in the air and whose compounds are used as fertilizer and in special hard glasses. Symbol: K; at. wt.: 39.102; at. no.: 19; sp. gr.: 0.86 at 20°C.
[ 1800-10; ]
Random House Webster's Unabridged English dictionary. Полный английский словарь Вебстер - Random House . 2012