| diapensia | (n) any boreal low-growing evergreen plant of the genus Diapensia |
| diapensiaceae | (n) north temperate low evergreen plants; in some classifications placed in its own order Diapensiales, Syn. diapensia family, family Diapensiaceae |
| diapensiales | (n) used in some classifications: coextensive with family Diapensiaceae, Syn. order Diapensiales |
| Diapensiaceae | n. a natural family of northern temperate low evergreen plants; in some classifications placed in its own order |
| Diapensiales | n. an order of plants, used in some classifications as coextensive with the family |