source: [少女のほっぺが風邪で膨らむGIF画像｜無料GIF画像検索 GIFMAGAZINE 361438]

a physical or mental feature which is regarded as indicating a condition of disease, particularly such a feature that is apparent to the patient: 病気の状態を示すものとしてみなされる身体的、精神的な特徴。特に患者にみてわかるような特徴。

症状, 徴候(→ sign)

e.g. dental problems may be a symptom of other illness.: 歯の問題は他の病気の徴候かもしれない。

Compare with sign (sense 1 of the noun) .

a sign of the existence of something, especially of an undesirable situation: 何かの存在の徴候。特に望まれない状況の。

(良くない事態の)徴候, 兆し, しるし(sign)

e.g. the government was plagued by leaks—a symptom of divisions and poor morale.: その政府は分裂と乏しいモラルの徴候である漏洩に悩まされた。

symptomless adjective

late Middle English synthoma, from medieval Latin, based on Greek sumptōma ‘chance, symptom’, from sumpiptein ‘happen’; later influenced by French symptome.