Having more than the normal numbers of petals, ray flowers, etc., but not enough to completely conceal the stamens and pistils.
Part or all of this entry has been imported from the 1913 edition of Webster's Dictionary, which is now free of copyright and hence in the public domain. The imported definitions may be significantly out of date, and any more recent senses may be completely missing.
Origin of semidouble
- semi- +"Ž double