Definition of unsaturated
: not saturated: such as
a
: capable of absorbing or dissolving more of something
an unsaturated solution
b
: able to form products by chemical addition
especially
: containing double or triple bonds between carbon atoms
unsaturated fats
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Merriam-Webster unabridged
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Time Traveler for unsaturated
The first known use of unsaturated was in 1758
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