What is the meaning of Poly?

A polytechnic.

Polyethylene (polythene).

Polyurethane.

A polygon.

Polyester.

Polyamory.

A polyamorous person.

A polycule.

Polyamorous.

To polymorph; to transform by magic.

A whitish, woolly plant (Teucrium polium) of the family Lamiaceae, found throughout the western Mediterranean.

clipping of polytechnique

clipping of polyvalent

clipping of polytechnique; itself a clipping of institut polytechnique or école polytechnique

clipping of polyvalente; itself a clipping of institut polyvalent or école polyvalente

Source: wiktionary.org