fon

1. background; basis
   Na tamnom fonu slova se bolje vide. — The letters are easier to see on a dark background.
2. (in painting) background of a picture
   Slikar je prvo obojio fon slike, a zatim figure. — The painter first painted the background of the picture, then the figures.
3. (in linguistics) phone
   Svaki fon se može zabeležiti fonetskom transkripcijom. — Every phone can be recorded in phonetic transcription.
4. (in acoustics) phon; unit of loudness level
   Nivo glasnosti zvuka izražava se u fonima. — Loudness level is expressed in phons.

Not to be confused with fen "hair dryer".