BIOL is a common abbreviation used for biology. However, if you are a writer or student who wants to avoid repetition of the same word, there are various synonyms for BIOL that can be used. Some of the most popular and frequently used synonyms for BIOL include life sciences, living systems, living creatures, natural sciences, biological sciences, and natural history. Each of these synonyms provides an alternative way of referring to the field of study that relates to living organisms and their life processes. Choosing one of these synonyms can help to add variety and interest to your writing or conversation.