Noun
the largest integer that divides without remainder into a set of integers
Source: WordNetSynonyms for the GCD include the greatest common factor (GCF), the highest common factor (HCF), and the greatest common measure (GCM). Source: Internet
This scientific approach of generating a language from selected source languages (called control languages) resulted in a vocabulary and grammar that we can call the highest common factor of each major European language. Source: Internet