potassium
noun(po-tas-si-um)
a silver-white soft light low-melting monovalent metallic element of the alkali metal group that occurs abundantly in nature especially combined in minerals
potassium
adjective(po-tas-si-um)
being or relating to a method of dating paleontological or geological materials based on the radioactive decay of potassium to argon that has taken place in a specimen
potassium
noun(po-tas-si-um)
a crystalline salt KBr with a saline taste that is used especially as a sedative and in photography
potassium
noun(po-tas-si-um)
a white salt K2CO3 that forms a strongly alkaline solution and is used in making glass and soap
potassium
noun(po-tas-si-um)
a crystalline salt KClO3 that is used as an oxidizing agent in matches, fireworks, and explosives
potassium
noun(po-tas-si-um)
a crystalline salt KCl occurring as a mineral and in natural waters and used especially as a fertilizer
potassium
noun(po-tas-si-um)
a very poisonous crystalline salt KCN used especially in gold and silver extraction from ore
potassium
noun(po-tas-si-um)
a soluble salt K2Cr2O7 forming large orange-red crystals used especially in dyeing, in photography, and as an oxidizing agent
potassium
noun(po-tas-si-um)
a white deliquescent solid KOH that dissolves in water with much heat to form a strongly alkaline and caustic liquid and is used chiefly in making soap and as a reagent
potassium
noun(po-tas-si-um)
a crystalline salt KI that is very soluble in water and is used medically chiefly in the treatment of hyperthyroidism, to block thyroidal uptake of radioactive iodine, and as an expectorant