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42,394 words to explore
1,392 words
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meteor
a bright streak in the sky from a falling star.
meteorite
A space rock that landed on Earth.
meteorologist
A scientist who studies weather.
metric
Relating to the measuring system based on meters, liters, and grams.
microbe
A tiny organism, often too small to see.
microorganism
A tiny living thing, often microscopic.
microscope
An instrument for viewing tiny objects.
midterm
An exam given halfway through a term.
migrate
To move from one place to another.
migration
Movement from one place to another.
mineral
A natural substance found in the earth.
minor
A second subject a student studies, with fewer courses than the main subject.
mirage
An optical illusion caused by heat.
modify
Change something to improve or alter it.
molecule
group of atoms bonded together
molting
The process in which an animal loses its old skin, feathers, or shell.
momentum
The quantity of an object's motion, equal to its mass times its velocity.
monopoly
Exclusive control of a market or supply of a product or service.
monsoon
A seasonal heavy rainstorm.
mores
Accepted traditional customs and behaviors.
motion picture
A film, especially one shown in a theater.
motivate
To encourage someone to take action.
mural
A large painting on a wall or ceiling.
musical
A play that includes singing and dancing.
Words selected by Inoh for the TOEFL iBT test. Not an official ETS list. How these words were chosen →