Mimi /mi-mi/ [2 sylls.] as a girls' name is pronounced MEE-mee. It is of French origin. Pet name for Marilyn or Miriam. Also used as a Spanish pet name for Mira, Maria, and Noemi.First used by parents after the appearance of Puccini's famous opera La Boh me and its tragic heroine Mimi.Actress Mimi Rogers.et name for Marilyn or Miriam. Also used as a Spanish pet name for Mira, Maria, and Noemi. First used by parents after the appearance of Puccini's famous opera La Boh me and its tragic heroine Mimi. Actress Mimi Rogers.
The hydronium ion is a polyatomic ion that forms when an acid releases a proton (H+) to a water molecule.he hydronium ion is a polyatomic ion that forms when an acid releases a proton (H+) to a water molecule.
Definition of hydrogen ion. 1  1 : the cation H+ of acids consisting of a hydrogen atom whose electron has been transferred to the anion of the acid. 2  2 : hydronium.