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poly

1
[ pol-ee ]
/ ˈpɒl i /
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noun, plural pol·ies.
Informal. polyester (def. 2):a blend of poly and cotton.
a fabric or garment made of polyester.
adjective
made of or containing polyester: a poly swimsuit.
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Origin of poly

1
By shortening

Other definitions for poly (2 of 4)

poly2
[ pol-ee ]
/ ˈpɒl i /

adjective Informal.
noting or relating to polyamory; polyamorous: They’re in a poly relationship.
identifying as polyamorous: They’re not monogamous, they’re poly.

Origin of poly

2
First recorded in 1990–95; shortening of polyamorous

Other definitions for poly (3 of 4)

poly-

a combining form with the meanings “much, many” and, in chemistry, “polymeric,” used in the formation of compound words: polyandrous; polyculture; polyethylene.

Origin of poly-

<Greek, combining form representing polýs; akin to Old English fela many. See plus

Other definitions for poly (4 of 4)

poly.

abbreviation
polytechnic.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

WORDS THAT USE POLY-

What does poly- mean?

Poly– is a combining form with multiple meanings. In many terms, it is used like a prefix meaning “much, many.” In terms from chemistry, it denotes “polymeric,” meaning “of or relating to a polymer.” It is often used in a variety of scientific and technical terms, especially in biology.

Poly– comes from Greek polýs, meaning “many.” The Latin equivalent of polýs is multus, also meaning both “much” and “many,” which is the source of the combining form multi. To learn more, check out our Words That Use article about multi-.

Examples of poly-

One example of a scientific term that features the form poly– is polytomy, “the act or process of dividing into more than three parts.”

The form poly– means “many,” as we have already seen. But what about the tomy part of the word polytomy? The form –tomy means “cutting, incision,” from Greek –tomia. Polytomy literally translates to “many cuts.”

What are some words that use the combining form poly-?

What are some other forms that poly– may be commonly confused with?

Break it down!

Lingual means “pertaining to languages.” With this in mind, what does polylingual mean?

How to use poly in a sentence

British Dictionary definitions for poly (1 of 2)

poly
/ (ˈpɒlɪ) /

noun plural polys
informal short for polytechnic
adjective
informal short for polyester
informal short for polythene

British Dictionary definitions for poly (2 of 2)

poly-

combining form
more than one; many or muchpolyhedron
having an excessive or abnormal number or amountpolycythaemia

Word Origin for poly-

from Greek polus much, many; related to Old English fela many
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Scientific definitions for poly

poly-

A prefix meaning “many,” as in polygon, a figure having many sides. In chemistry, it is used to form the names of polymers by being attached to the name of the base unit of which the polymer is made, as in polysaccharide, a polymer made of repeating simple sugars (monosaccharides).
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
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