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Children's Dictionary
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mermaid an imaginary sea creature with the head and upper body of a woman and the lower body and tail of a fish.
merry cheerful and happy, or likely to be so.
merry-go-round a round platform that turns by the power of a machine and has seats in the form of animals that go up and down on poles. People pay for rides on a merry-go-round.
merrymaking the act of laughing and having fun.
mesa a high piece of land with a flat top and steep sides, found in Mexico and the southwest area of the United States.
mesh a material or article made of fiber woven to form open spaces, as in a net. [4 definitions]
mess a state of being dirty or not neat. [5 definitions]
message spoken or written information, sent from one person or group to another. A message is usually delivered by someone or something other than the person who wants to communicate. [2 definitions]
mess around (informal) to spend time without any purpose.
messenger a person who carries and delivers messages and packages.
messy dirty or not tidy. [2 definitions]
met past tense and past participle of meet 1.
metabolism the processes in plants and animals by which food is changed into energy or used to make cells and tissues.
metal any solid mineral element that exhibits certain characteristics such as the ability to conduct heat or electricity. Most metals may be shaped under heat or pressure. Iron, silver, copper, and gold are metals.
metallic made of or containing metal. [2 definitions]
metamorphic having to do with a change in form. [2 definitions]
metamorphosis the changes in form of some living things as they grow. The change from caterpillar to butterfly or from tadpole to frog are examples of metamorphoses. [2 definitions]
metaphor a phrase that describes something by comparing it to some other thing.
meteor a bright streak or flash in the sky which occurs when small pieces of space material enter our atmosphere and burn up, often called a shooting star.
meteorite a piece of rock from outer space that has landed on Earth.
meteorology the science that studies the earth's weather and atmosphere.