disappeared(caused to disappear) adjective [UK: ˌdɪ.sə.ˈpɪəd] [US: ˌdɪ.sə.ˈpɪrd]The snow has disappeared. = La nieve ha desaparecido.
missing(not able to be located) adjective [UK: ˈmɪs.ɪŋ] [US: ˈmɪs.ɪŋ]There's a girl missing. = Ha desaparecido una chica.
desaparecido en acción adjective
missing in action(designation for a member of an organization with whom contact is lost but whose death is not confirmed) adjective [UK: ˈmɪs.ɪŋ ɪn ˈæk.ʃn̩] [US: ˈmɪs.ɪŋ ɪn ˈæk.ʃn̩]