極きょく低てい温おんきょくていおんじ字FuriganaMeanings1nounextremely low temperature; cryogenic temperatureTechnical and general term for temperatures near absolute zero, often used in physics and engineering contexts.極きょく低てい温おんでは物ぶっ質しつの性せい質しつが大おおきく変かわる。