English Reference

Word

poly

US/ˈpɑɫi/

UK/pˈɒli/

Definitions

01a college

B2

n. a polytechnic, which is a type of college that focuses on practical or technical subjects.

n. a polytechnic college. This usage is primarily British and often refers to institutions that were converted into universities in the early 1990s.

“My dad studied engineering at the local poly before it became a university.”

“Before the 1992 reforms, many students preferred the vocational focus of a poly over the more theoretical approach of traditional universities.”

British English · Informal

Usage

Usually used with 'the' when referring to a specific local institution.

Teaching tip

In the UK, most 'polys' are now officially universities, so this term is increasingly used by older generations or in a historical context.

02plastic or fabric

C1 · Technical

n. a short way to say polyester, polyethylene, or other plastic materials.

n. a clipping for various polymers, including polyester, polyethylene, or polyurethane, depending on the industry.

“This shirt is a poly-cotton blend, so it doesn't wrinkle easily.”

“The manufacturer switched to a high-density poly for the casing to improve the product's impact resistance.”

Informal · Technical

Usage

Often appears as a prefix in compound words like 'poly-tunnel' or 'poly-blend'.

03polyamory

C1

n. a person who has more than one romantic partner at the same time, or the practice itself.

n. a clipping for polyamory or a polyamorous person; refers to the practice of engaging in multiple romantic relationships with the consent of all involved.

“They have been poly for years and find that it works well for their family.”

“The community centre hosted a meetup for people who identify as poly to discuss navigating complex relationship dynamics.”

Informal · Slang

Teaching tip

This is a modern social term; it can be used as both a noun for the person and an adjective for the lifestyle.

Synonyms

polyamorousnon-monogamous

Antonyms

04polyamorous

C1

adj. describing a person or relationship that involves more than one partner.

adj. relating to polyamory; used as a predicative or attributive adjective in informal registers.

“She is in a poly relationship and is very happy with her partners.”

“Navigating poly dynamics requires a high level of communication and emotional intelligence from everyone involved.”

Informal · Slang

Synonyms

non-monogamous

Antonyms

Real-World Examples

“The word polymathy itself captures the bricolage of many ( poly ) worlds of knowledge ( mathy ).”
Aeon · 11 Sept 2026
“There are also poly people who prefer to live solo , embracing a ‘solo polyamorous’ lifestyle, through which they live alone but engage in multiple, committed relationships.”
BBC · 21 Dec 2022

Etymology

Shortening of various words.

From Latin polium, the name of a plant, perhaps Teucrium polium.

Etymology adapted from Wiktionary, available under CC BY-SA 4.0.

This entry

Level
C1 · Advanced
Frequency
Frequent
Updated

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