Doryopteris
— Noun
– English
~ small to medium tropical tufted ferns; sometimes placed in family Adiantaceae
DOS
— Noun
– English
~ an operating system that is on a disk
dos
— Noun
– English
~ the federal department in the United States that sets and maintains foreign policies; "the Department of State was created in 1789"
dosage
— Noun
– English
~ the quantity of an active agent (substance or radiation) taken in or absorbed at any one time