plano- 1
a combining form meaning "flat," "plane," used in the formation of compound words: planography.
Also, plani-; esp. before a vowel, plan- .
[ comb. form repr. L planus level, planum level ground ]
plano- 2
a combining form meaning "moving," "capable of movement," used in the formation of compound words: planogamete.
[ comb. form repr. Gk plános wandering, roaming. See PLANET ]