lipo- 1
a combining form meaning "fat," used in the formation of compound words: lipolysis.
Also, esp. before a vowel, lip- .
[ comb. form repr. Gk lípos fat ]
lipo- 2
a combining form meaning "lacking," "leaving," used in the formation of compound words: lipography.
[ lip-, weak s. of leípein to leave, be lacking; see -o- ]