pri·ma·tol·o·gy 
(prī′mə-tŏlə-jē)
(prī′mə-tŏlə-jē)n.
The branch of zoology that deals with primates.
pri′ma·to·logi·cal (-tl-ŏjĭ-kəl) adj.
pri′ma·tolo·gist n.
- four-flusher
- four-footed
- fourgon
- fourhanded
- Four-H Club
- Four Horsemen of the Apocalypse
- Four Hundred
- Fourier
- Fourier analysis
- Fourierism
- Fourierist
- Fourierite
- Fourier series
- Fourier transform
- four-in-hand
- four-leaf clover
- four-letter word
- four-o'clock
- four-peat
- fourpenny nail
- fourplex
- four-poster
- fourragère
- fourscore
- foursome