poly (polys plural )A poly is the same as a polytechnic.
(mainly BRIT)
INFORMAL n-count
poly-
Poly- is used to form adjectives and nouns which indicate that many things or types of something are involved in something. For example, a polysyllabic word contains many syllables. prefix
He portrays the psyche as polycentric.
roly-poly
Roly-poly people are pleasantly fat and round.
INFORMAL adj
...a short, roly-poly man with laughing eyes.