Full Definition of AVERAGE. 1. a: a single value (as a mean, mode, or median) that summarizes or represents the general significance of a set of unequal values b: mean 1b. 2. a: an estimation of or approximation to an arithmetic mean.ull Definition of AVERAGE. 1. a: a single value (as a mean, mode, or median) that summarizes or represents the general significance of a set of unequal values b: mean 1b. 2. a: an estimation of or approximation to an arithmetic mean.
Comparative anatomy is the study of the relatedness of species through examining anatomical structures. Some structures, like homologous structures indicate two organisms shared a recent common ancestor, like the arm bones in humans, bats, whales and birds.
Gross anatomy is the study of structures large enough to be seen with the naked eye, and also includes superficial anatomy or surface anatomy, the study by sight of the external body features. Microscopic anatomy is the study of structures on a microscopic scale, including histology (the study of tissues), and embryology (the study of an organism in its immature condition).