1. The scientific study of life.<br /><br />2. One of the many things that has been pissing off religious zealots for decades. A drop in a bucket, really.<br /><br />3. One of the many things that has been pissing off about 90% of all students for decades.<br /><br />4. The 21st century counterpart to physics/chemistry (20th century) and mechanics (19th century).<br /><br /><br />biology definition by Urban Dictionary
