(of a substance) undergoing a reversible change of colour when heated or cooled.
‘Others used materials with thermochromic pigments that change colour at different temperatures.’
‘The design is printed in thermochromic ink, so when the stamp is heated - such as by placing a finger on it - the ink changes colour to reveal an ion enclosed within the ‘buckyball’ cage.’
‘This gives a thermochromic transition temperature of 29°C, which is near ideal for intelligent window coatings.’
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