(informal) A species of diatom, Didymosphenia geminata, best known as widely invasive algae.

Didymos: An asteroid in Didymos double asteroid, Solar System, Milky Way Galaxy; the main asteroid of the binary asteroid system / Didymos: A binary asteroid in Solar System, Milky Way Galaxy

(botany, zoology) Twin, twinned; growing or occurring in pairs.

A town located in the eastern part of the Evros Prefecture of Thrace, Greece.

plural of didymospore

A form of dictyospore whose pattern of septa is reminiscent of a brick wall

Any flowering plant of the genus Didymocarpus

plural of didymocarpoid

Any member of the Didymoconidae, an extinct family of eutherians.

plural of didymoconid