Where does “нейронный” come from?

нейронный (Russian) comes from Russian нейро́н, from Latin neuron, from Ancient Greek νεῦρον, from Proto-Indo-European snéh₁wr̥, from Proto-Indo-European (s)neh₁- — to spin (thread), to sew.

нейронный (Russian): neuron; neuronal, neural

Definitions

neuron; neuronal, neural

Ancestry of “нейронный”, step by step

Step	Language	Word	Meaning
1	Russian	нейро́н	neuron
2	Latin	neuron	—
3	Ancient Greek	νεῦρον	sinew, tendon; cord, of a slingshot, bowstring;...
4	Proto-Indo-European	snéh₁wr̥	sinew, tendon
5	Proto-Indo-European	(s)neh₁-	to spin (thread), to sew

Every word from Proto-Indo-European (s)neh₁- →Every word from Proto-Indo-European snéh₁wr̥ →Every word from Ancient Greek νεῦρον →