heatless C1 Topic:Energy & Industry US /ˈhitləs/ UK /ˈhiːtləs/ See IPA manual Freq #538118 Meanings 1 adj without warmth or heat; cold By late autumn the pale, heatless sun barely warmed the frozen field. 2 adj producing little or no heat The museum uses heatless LED lighting to protect fragile manuscripts. Thesaurus Synonyms 1 adj · without warmth or heat; cold coldunheatedchill 2 adj · producing little or no heat cool-runningnonthermalathermal ↔ Opposites hotheatedheat-producingthermal Word family Derived forms heatlessness Related forms heatcoldtemperatureluminescence Etymology Formed from heat + -less, the suffix meaning 'without.' The word can describe something deprived of warmth or a process, light source, or device that produces no appreciable heat. Topics Energy & Industry External links Cambridge Dictionary Wiktionary Google Images # heatless **Type:** Word **Level:** C1 **Part of speech:** adj **IPA (US):** /ˈhitləs/ **IPA (UK):** /ˈhiːtləs/ **Frequency rank:** 538118 ## Meanings 1. without warmth or heat; cold 2. producing little or no heat ## Examples - By late autumn the pale, heatless sun barely warmed the frozen field. - The museum uses heatless LED lighting to protect fragile manuscripts. ## Synonyms - cold - unheated - chill - nonthermal - athermal ## Antonyms - hot - heated - heat-producing - thermal ## Derived Forms - heatlessness ## Related Forms - heat - cold - temperature - luminescence ## Etymology Formed from heat + -less, the suffix meaning 'without.' The word can describe something deprived of warmth or a process, light source, or device that produces no appreciable heat. ## Topics - Energy & Industry markdown