synapomorphy
noun
syn·ap·o·mor·phy (ˌ)si-ˈna-pə-ˌmȯr-fē 
plural synapomorphies
: a character or trait that is shared by two or more taxonomic groups and is derived through evolution from a common ancestral form
Word History
Etymology
International Scientific Vocabulary syn- + apomorphy derived evolutionary trait or feature (from apo- + -morphy)
First Known Use
1965, in the meaning defined above
- spotted sucker
- spotted sunfish
- spotted tree
- spotted turtle
- spotted water hemlock
- spotted water hen
- spotted whip ray
- spotted wilt
- spotted wintergreen
- spotted woodpecker
- spotted-finned sunfish
- spotted-necked otter
- spottedly
- spottedness
- spotter
- spotters
- spottest
- spottier
- spottiest
- spottilier
- spottiliest
- spottily
- spottiness
- spottinesses
- spotting