The spelling of the word "Thermotic" can be explained using the International Phonetic Alphabet (IPA), which aims to provide a standardized method of representing the sounds of human speech in written form. In IPA, "Thermotic" is spelled /θərˈmɑtɪk/, with the symbol "θ" representing the voiceless dental fricative sound at the beginning of the word. The letter "r" indicates a rolled or trilled "r" sound, while the vowels "a" and "i" are pronounced as in the words "car" and "bit", respectively.
Relating to heat or to thermotics.
A practical medical dictionary. By Stedman, Thomas Lathrop. Published 1920.