Yes. The ammonium ion has a formula of NH4+ and has a positive charge so it is a cation.
What does Asa mean? Asa [asa] as a boys' name (also used less generally as girls' name Asa) is pronounced AY-sah. It is of Hebrew origin, and the meaning of Asa is doctor, healer. Biblical: name of the third king of Judah, who reigned for forty years. Made popular by the Puritans in the 17th century.
From the name of a Basque town, derived from aldats meaning slope. Originally denoted someone who was from the city of Alfaro in La Rioja, Spain. It is possibly derived from Arabic meaning the watchtower. From a Spanish place name, possibly derived from Spanish alba white.