<p><strong>Noun:</strong></p><ul><li>The science of life or living matter in all its forms and phenomena, especially with reference to origin, growth, reproduction, structure, and behavior.</li><li>The living organisms of a region: the biology of Pennsylvania.</li><li>The biological phenomena characteristic of an organism or a group of organisms: She is studying the biology of worms, especially in regard to their reproductive behavior.</li></ul>