How to say "thermometer" in Japanese

• 温度計おんどけいCommon
  nounThe general word for a thermometer of any kind, whether measuring body, room, or outdoor temperature. Use this in virtually any context, from medical settings to weather reporting.
  温度計おんどけいは１５度どだった。↗

  The thermometer stood at 15 degrees.
• 寒暖計かんだんけいCommon
  nounAlso means thermometer, but with the nuance of an instrument indicating hot and cold, typically air temperature. In everyday speech 温度計 is usually the word you want instead.
  寒暖計かんだんけいはしばしば零れい度ど以下いかになる。↗

  Thermometers often go below zero.

Both words mean thermometer; 温度計 is the everyday word for any temperature-measuring device, while 寒暖計 refers to one showing air temperature, especially outdoors.

Usage comparisons are AI-assisted and cross-checked by multiple models; for study reference only

• 温度計おんどけいthermometer
• 寒暖計かんだんけいthermometer
• サーモメーターthermometer
• 体温計たいおんけい(clinical) thermometer
• 検温器けんおんき(clinical) thermometer