﹒Relating to, involving, or caused by heat.
﹒Designed to retain body heat, especially in reference to clothing.
﹒A rising current of warm air.
﹒The hikers wore thermal underwear to stay warm during the freezing mountain expedition.
﹒The eagle soared effortlessly by catching a rising thermal in the afternoon air.
﹒Engineers installed thermal insulation in the walls to improve the building's energy efficiency.
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