The term 'STUDY OF LIFE' can be summarized as the field of BIOLOGY, which is a seven-letter word. BIOLOGY is the scientific study of living organisms, including their structure, function, growth, origin, evolution, and distribution. It is a broad field that encompasses many sub-disciplines, such as botany, zoology, genetics, and ecology. BIOLOGY is a fundamental science that has applications in many areas, such as medicine, agriculture, and environmental conservation.