There are several synonyms that can be used to refer to "zero Kelvins," a term used to describe the temperature of absolute zero, the lowest possible temperature in the universe. Some of the synonyms for this term include "absolute zero," "minus 273.15 degrees Celsius," and "minus 459.67 degrees Fahrenheit." These terms all describe the same phenomenon, where all matter ceases to exhibit thermal energy and cannot be cooled any further. The concept of zero Kelvins is a fundamental concept in physics and is used to study the behavior of matter at extreme temperatures. Scientists use these synonyms interchangeably when discussing absolute zero and its properties.