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auxology

n. (context biology English) The study of growth

Wikipedia
Auxology

Auxology, sometimes called auxanology (from Greek , auxō, or , auxanō, "grow"; and , -logia), is a meta-term covering the study of all aspects of human physical growth (though it is also a fundamental of biology, generally speaking). Auxology is a highly multi-disciplinary science involving health sciences/ medicine ( pediatrics, general practice, endocrinology, neuroendocrinology, physiology, epidemiology), and to a lesser extent: nutrition, genetics, anthropology, anthropometry, ergonomics, history, economic history, economics, socioeconomics, sociology, public health and psychology, among others.