biology (n.) Look up biology at Dictionary.com
"the science of life and living things," 1819, from Greek bios "life, one's life, lifetime" (from PIE root *gwei- "to live;" see bio-) + -logy "study of." Suggested 1802 by German naturalist Gottfried Reinhold Treviranus (1776-1837), and introduced as a scientific term that year in French by Lamarck; they seem to have hit upon the word independently.