Abstract
Lactation is a vital function of reproduction and population dynamics as human milk supports infant survival and development. Although the physiological processes of lactation have largely remained unchanged throughout human history, contemporary practices in human milk provision have expanded the original lexicon, resulting in ambiguity and potential misrepresentations in lactation-related language. We provide an overview of the anatomy and physiology of lactation to emphasize the importance of precise and consistent language as most nurses and health care professionals receive little to no education in their programs of study about lactation and breastfeeding. Concrete definitions and explanations on how to use the science of human milk and the physiology of lactation are crucial for evidence-based lactation education, support, and intervention. LactaPedia, an online comprehensive human lactation glossary, is freely accessible to nurses and the public to remain updated on lactation-related language as well as offer feedback on the relevancy and usability of any fundamental terminology. Precise and consistent use of lactation-related language will overall improve communication between nurses and multidisciplinary teams and thereby enhance care and outcomes for families.