dōˈmāsh(ē)əm noun
( plural doma·tia -(ē)ə)
Etymology: New Latin, from Greek dōmation small house, bedroom, diminutive of dōma house; akin to Greek domos house — more at timber
: a portion of a plant (as on or in a leaf) modified to form a chamber or other form of shelter for insects, mites, or fungi