Where does “spastic abasia” come from?

spastic abasia (English) comes from English spastic, from Latin spasticus, from Ancient Greek σπαστικός, from Ancient Greek -τικός, from Ancient Greek -σις, from Ancient Greek -τις, from Proto-Indo-European -tis — Derives abstract/action nouns from verb roots.

spastic abasia (English): An inability to walk due to stiffening of leg...

Definitions

  1. An inability to walk due to stiffening of leg...

Ancestry of “spastic abasia”, step by step

spastic abasia traces back through two separate lines of ancestry.

via English spastic

StepLanguageWordMeaning
1EnglishspasticOf, relating to, or affected by spasm; Of or...
2Latinspasticus
3Ancient Greekσπαστικόςdrawing in, absorbing
4Ancient Greek-τικόςrelating to, suited to, skilled in, able to,...
5Ancient Greek-σιςAdded to verb stems to form abstract nouns or...
6Ancient Greek-τιςretained after dentals
7Proto-Indo-European-tisDerives abstract/action nouns from verb roots

via English abasia

StepLanguageWordMeaning
1EnglishabasiaAn inability to walk due to a defect in muscular...
2New Latina-without; not, absence of; Alternative form of ab-
3Ancient Greekβάσιςstep; rhythm; foot
4Proto-Hellenicgʷə́tisstep
5Proto-Indo-Europeangʷémtisstep, act of walking
6Proto-Indo-Europeangʷem-to step
Every word from Proto-Indo-European -tisEvery word from Ancient Greek -τικόςEvery word from Ancient Greek σπαστικός