noun, masculine/poˈtasjo/plural: potasios
potasio is masculine in Spanish.
potassium
Related: bicarbonato de potasio, cloruro de potasio, nitrato de potasio, permanganato de potasio, potásico
Borrowed from New Latin potassium, from English potassium, coined in 1807 by Humphrey Davy, from English potash, from Dutch potasch, from Middle Dutch pottaschen (literally “pot ashes”), ultimately derived from Proto-Germanic *puttaz (“pot”) and *askǭ (“ash”).