Simple Definition of symptom

from our Learner's Dictionary

symptom

noun

plural symptoms
1
: a change in the body or mind which indicates that a disease is present
cold/flu symptoms
often + of
symptoms of heart disease
a symptom of depression
2
: a change which shows that something bad exists : a sign of something bad
often + of
Layoffs and salary freezes are symptoms of a company in financial trouble.

Cite this Entry

“Symptom.” Merriam-Webster.com Simple Definition, Merriam-Webster, https://www.merriam-webster.com/simple/symptom. Accessed 20 Jun. 2026.

More from Merriam-Webster on symptom

More from Merriam-Webster