phyletic
adjective
phy·let·ic fī-ˈle-tik 
: of or relating to evolutionary change in a single line of descent without branching
phyletically
fī-ˈle-ti-k(ə-)lē
adverb 
Word History
Etymology
International Scientific Vocabulary phyl- + -etic (as in genetic)
First Known Use
1877, in the meaning defined above
Medical Definition
phyletic
adjective
phy·let·ic fī-ˈlet-ik
: of or relating to the course of evolutionary or phylogenetic development
- retrofit
- retrofits
- retrofitted
- retrofitting
- retrofittings
- retroflection
- retroflections
- retroflex
- retroflexed
- retroflexes
- retroflexion
- retroflexions
- retrog
- retrogradation
- retrogradations
- retrogradatory
- retrograde
- retrograde canon
- retrograde inversion
- retrograded
- retrogradely
- retrogrades
- retrograding
- retrogress
- retrogressed