Homenum Revelio (Human-Presence-Revealing Spell)

Type: Charm

Pronunciation: HOM-eh-num reh-VEH-lee-oh

Description: Reveals human presence in the vicinity of the caster.

Seen/Mentioned: Used multiple times by various people in 1997.

Etymology: Most likely from Latin homo, meaning human, and "reveal", though the classical Latin form would be hominem instead of homenum, which shows Portuguese influence ("man" is homem in Portuguese)—indeed, Rowling speaks the language.

Notes: It can be used non-verbally; Dumbledore does so to detect Harry underneath his Invisibility Cloak.