Secreting externally, directly or through a duct: exocrine cells.
Of, relating to, or produced by an exocrine gland.
exocrine ex·o·crine (ěk'sə-krĭn, -krēn, -krīn') adj.
Of or relating to a glandular secretion released externally through a duct to a surface.
Relating to a gland that secretes outwardly through a duct or ducts.