Definition of symptom
1a
: subjective evidence of disease or physical disturbance
broadly
: something that indicates the presence of bodily disorder
b
: an evident reaction by a plant to a pathogen
2a
: something that indicates the existence of something else
symptoms of an inner turmoil
b
: a slight indication : trace
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Merriam-Webster unabridged
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The first known use of symptom was in 1541
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