(adj) - 1. the form of a word that refers to more than one person or thing

The word teeth is the plural form of the word tooth.

(adj)- 2. relating to or made up of more than one kind or group

We live in a plural society of many religions, ethnicities, races, and cultures.

(n) - a situation where people of different social classes, religions, races, etc., are together in a society but continue to have their different traditions and interests

The pluralism in my community has taught me so much about other cultures.

(v) - to increase greatly in number or amount; to become much more numerous

I soon learned that my homework load would multiply in middle school.

(adj) - involving two or more subject areas

The multidisciplinary class was taught by math and science teachers.

(n) - a two-dimensional shape that has three or more straight sides and angles

A polygon can take many shapes depending on the number of sides.

(adj) - describing a belief that there is more than one god

The ancient Greeks were polytheistic, believing in many gods and goddesses.

(n) - a great number of things or people

A multitude of people gather in Time Square every New Year’s Eve.

(adj) - using or involving several forms of communication or expression

I created a multimedia presentation for school that contained music, video, and photographs

(n) - an area that includes several large cities

Southern California is a megalopolis with cities like Los Angeles, Orange County, and San Diego.

(n) - Megalosaurus was a large, meat-eating dinosaur

The Megalosaurus weighed about 1 ton and was up to 30 feet long.