This reference dictionary takes a new approach to the study of physical anthropology by focusing on the concepts involved. As Stevenson notes at the outset, physical or biological anthropology is a synthetic discipline which has borrowed much from evolutionary biology, anatomy, genetics, medicine, zoology, paleontology, and demography. Thus, although none of the concepts are unique to the discipline, their relative importance and the contexts in which they are used may be. Here, Stevenson presents concise entries describing the development of physical anthropological concepts followed by bibliographies including most of the major works in the field. The history of the usage of each concept is traced from its origins--often outside the discipline of physical anthropology--to the contemporary and usually multidisciplinary contexts in which physical anthropologists participate. Entries clearly delineate both the theoretical development of the concepts under discussion and their applications in physical anthropological practice. The comprehensive bibliographies enable the reader to pursue further study of concepts of particular interest. Indispensable to students just beginning their studies in the field, the dictionary will also be an invaluable reference for scholars and researchers.