Morphology - definition Morphology is a branch of biology dealing with the study of the form and structure of organisms and their specific structural features. It is the study of the size, shape, and structure of animals, plants, and microorganisms and of the relationships of their constituent parts . The term refers to the general aspects of biological form and arrangement of the parts of a plant or an animal. The etymology of the word "morphology" is from the Ancient Greek μορφή , meaning "form", and λόγος meaning "word, study, the concept of form in biology dates back to Aristotlethe field of morphology was developed by Johann Wolfgang von Goethe and independently by the German anatomist Karl Friedrich Burdach who was a physiologist. Among other important theorists of morphology are Lorenz Oken, Geoffroy Saint-Hilaire, Richard Owen, Karl Gegenbaur, and Ernst ...