exocrinology
noun
exo·cri·nol·o·gy
| \ ˌek-sə-kri-ˈnäl-ə-jē, -ˌkrī-, -ˌkrē-
\
\
plural exocrinologies
Medical Definition of exocrinology
: the study of external secretions (as pheromones) that serve an integrative function