having many different colors
Polychromatic

a hospital that treats many different types of diseases
polyclinic

having many fingers or toes (more than usual)
polydactyl

a person who knows how to speak, read, or write many languages
polyglot

a closed plane figure with may straight lines that connect
polygon

a machine that writes down many different changes in the body while the person answers questions; a lie detector test
polygraph

a solid figure with many sides, such as a pyramid
polyhedron

having or assuming many different forms
polymorphous

having many syllables
polysyllabic

the belief in many different gods
polytheism
