Numerical Prefixes and Related Terms

penta

• three

• four

• five

• six

decathlon

• an athletic contest with ten events

• a type of running race

• a swimming competition

• a team sport involving five players

deca

• five

• ten

• eight

• twelve

hexa

• four

• five

• six

• seven

monotone

• one tone, unchanging tone

• a variety of tones

• a musical scale

• a type of rhythm

tripod

• a portable three legged frame

• a type of camera lens

• a stand for holding a microphone

• a device for measuring angles

tri

• two

• three

• four

• five

Pentagon

• a five-sided government building in Washington DC

• a four-sided military base

• a six-sided residential area

• a three-sided office complex

mono

• one

• two

• three

• four

trisect

• cut or divide into three parts

• cut or divide into two parts

• cut or divide into four parts

• cut or divide into five parts