For the prefix poly- and words related to it see Wiktionary.

Poly can have multiple meanings:

* As a prefix, often meaning more than one or many (eg, polyvalent - capable of many valences)

* As a feminine given name (Poly, also spelled Polly).

Poly is also commonly used as an abbreviation for various words and phrases including: Science and technology

* Polyethylene, polyurethane and polyester, all forms of plastic polymers

* Polysilicon, a state of silicon used as a gate material in MOSFET transistors and CMOS microchips

* Poly-A, a step in the transcription of DNA to RNA in which multiple adenosine nucleosides are added to the 3' end of the mRNA sequence.

* Polymorphism, polymorphism describes multiple possible states for a single property

* Polyspheric, a shape composed of more than one sphere, a term used by Chrysler to identify their hemi-derived but lower cost V8 engines built 1955-67

* Polygraph, or "lie detector" (particularly in Defense & Intelligence fields)Mathematics and logic

* Polygon, especially in relation to 3D graphics as used in terms such as high-poly

* Polynomial, a type of mathematical functionOther

* Polyamory, polygamy, and certain other forms of nonmonogamy beginning in poly

* Polyclinic, a clinic where a wide range of health care services (including diagnostics) can be obtained without the need for an overnight stay

* Polyrunning a person good at all track events

* Polytechnic educational institutions

* Polymath, a person well educated in a wide variety of subjects or fields

* Polydactyly, having extra digits in hands or feet

* Poly Technologies, Chinese company

* China Poly Group, Chinese business group