What Does "Poly" Mean?

Understanding combining forms (sometimes called root words), such as "poly," can help expand your vocabulary. Combining forms add meaning to many other words.

  1. Dictionary Definition

    • Merriam-Webster's Dictionary defines "poly" as meaning: "1) many, several, much or 2) containing an indefinite number more than one of a (specified) substance." It is derived from the Greek word "polys," which means "many."

    Poly as a Prefix

    • Typically, "poly" doesn't stand alone as a word, although it is occasionally used that way as a shortened reference to certain plastics and fabrics (polymers and polyester). It serves as a prefix (or beginning) and combines with other words to create new ones.

    Examples

    • A quick scan of the dictionary shows several words with the prefix "poly." For example, polygon (a many-sided shape), polychromatic (many-colored), polyclinic (a hospital or clinic that treats many diseases) or polygamy (having multiple mates or spouses).

    Scientific Words

    • The second portion of the definition of "poly" tends to lend itself to scientific references. Such words as polymer, polyester, polycyclic, and polyhydroxy are examples.

    "Poly" as a Root

    • In same cases, poly (meaning "many") is the root of similar words, although they don't contain "poly." Hoi polloi is a good example. It means "the masses" or "general populace."

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