Definition

1. Noun:
   • A line on a map or chart connecting points having equal temperature at a given time or over a given period: In meteorology and geography, an isotherm is a type of contour line used to visualize temperature distribution across a region.

Examples of Usage

• Noun:
  • The weather map showed an isotherm of 20°C stretching across the southern states.
  • Scientists study isotherms to understand global climate patterns.

Advanced Usage

• "Annual isotherm": A line connecting points with the same average temperature over an entire year.
  • The annual isotherm for 10°C has shifted northward due to climate change.
• "Sea surface isotherm": A line connecting points of equal temperature on the ocean's surface.
  • The satellite data plotted the sea surface isotherms to locate the warm current.

Variants and Related Words

• Isothermal (adj): Of or relating to constant temperature.
  • The experiment was conducted under isothermal conditions.
• Isothermality (n): The quality or state of having uniform temperature.

Synonyms

• Temperature contour: A line of equal temperature.
• Thermoisopleth: Another technical term for a line connecting points of equal temperature.

Related Phrases

• "To plot an isotherm": To draw or calculate a line of equal temperature on a map.
  • The students learned how to plot an isotherm using temperature data from weather stations.
• "Isotherm analysis": The study or interpretation of temperature patterns using isotherms.
  • Isotherm analysis revealed a pocket of cooler air over the lake.

Noun

1. (meteorology) an isogram connecting points having the same temperature at a given time