The phrase "lowest common multiple" refers to the smallest number that two or more different numbers can be evenly divided by. This concept is also known as "least common multiple", "LCM" or "smallest common multiple". Essentially, it represents the smallest common denominator of multiple numbers. Some other synonyms for LCM include "common multiple", "simplest common multiple" and "least common denominator". When working with fractions and decimals, it's important to find the LCM in order to simplify the calculations and ensure that all numbers can be expressed in the same base. Whether you refer to it as the LCM or one of its synonyms, this concept is essential in many areas of mathematics.