Carbon-dating estimate is a method of determining the AGE of an object by measuring the amount of carbon-14 it contains. Carbon-14 is a radioactive isotope of carbon that is present in all living things and decays at a known rate. By measuring the amount of carbon-14 in an object, scientists can estimate its AGE. The answer to the crossword for the term 'Carbon-dating estimate' is AGE, which is a 3 letter word.