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Grade 8
Glossary
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A
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B
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E
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F
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G
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H
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I
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J
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K
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L
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M
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N
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O
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P
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Q
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R
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T
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W
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List of words for Letter 'A'
Click on
to hear the word and definition.
adolescence
The physical, emotional, and social transition from childhood to adulthood.
advertisement (ad)
An announcement designed to persuade people to buy a product or service.
aerobic (uh•ROH•bik) exercise
Vigorous activity in which oxygen is taken in for a period of at least 20 minutes.
affection
Warm feelings toward another person.
air bag
A cushion in a motor vehicle that automatically inflates instantly after a collision occurs.
air pollution
The contamination of air with undesirable gases, particles, dust, smoke, and chemicals.
Air Quality Index (AQI)
A measure of air quality based on the total of the levels of five different pollutants.
alcohol
A drug that slows down the central nervous system and harms body organs.
alcoholism
A disease marked by physical and psychological dependence on alcohol.
all-terrain vehicle (ATV)
A motorized vehicle that can travel easily over rough surfaces.
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