1. allowing heat to pass through; permeable to radiant heat
Usage: technical; physics

Examples

• Glass is diathermanous, which is why greenhouses trap heat effectively.
• The diathermanous properties of certain materials make them useful in thermal applications.
• Unlike opaque materials, diathermanous substances allow infrared radiation to pass through.
• Scientists studied the diathermanous nature of the polymer to understand its heat transmission.
• The diathermanous window allowed the thermal camera to detect heat signatures inside the building.