plesiomorphic
/ˌpliːzɪəˈmɔːfɪk/adjective
Taxonomy. Of a trait or characteristic: primitive and ancestral; specifically present in organisms outside a clade or group under consideration, and so not distinctively characteristic of members of that clade or group (and presumed to derive from a more distant common ancestor). Compare plesiomorphous. Opposed to apomorphic.
Origin
Mid 19th century (in an earlier sense). From plesio- + -morphic.
- Ionic dialect
- Ionicisation
- Ionicise
- Ionicism
- ionicity
- Ionicization
- Ionicize
- Ionic meter
- Ionic metre
- ionic radius
- Ionic school
- Ionic sect
- ionic strength
- ion implantation
- ionise
- ioniser
- Ionism
- ionist
- ionium
- ionizable
- ionization
- ionization chamber
- ionization constant
- ionization current
- ionization energy