Wiktionary
andragogy
n. The methods or techniques used to teach adults.
Wikipedia
Andragogy
Andragogy is the theory and practice of education of adults. The word is a combination of andro (from , anēr, genitive , andros, "man") and (ágō), meaning "to lead", it arose from the practice of pedagogy to address the specific needs in the education of adults as opposed to the education of children.