Dictionaries, Thesauruses, Pictures, and Press Releases
- Derryan
- Derwent whitebait
- Deryugin, Konstantin Mikhailovich
- Des Cloizeaux, Alfred-Louis-Olivier Legrand
- Desaguliers, John Theophilus
- Desargues, Girard
- Descartes: Mathematics and Physics.
- Descartes: Physiology.
- descending tracts
- Descourtilz, Michel Étienne
- desert locust
- desert mining bees
- desert rose
- desert varnish
- Desfontainea
- Deshayes, Gerard Paul
- desiccation cracks
- desiccation cracks
- desiccator
- Deslandres, Henri