desaparición
/desapaɾiˈθjon/ · B1 · noun · f
disappearance
🎩🐇 des- (un-) + aparición (appearance) = an un-appearing, a disappearance
Built like English dis-appear-ance: des- reverses aparecer (to appear), and -ción turns the verb into a noun, like -tion. Nouns ending in -ción are feminine, so it is la desaparición. Stress falls on the final -ción.