English
annulospiral
From annulo- + spiral.
Proto-Indo-European *sper- ‘to twist’
…
Ancient Greek σπεῖρα ‘wreath, coil, twist’
Latin spīra ‘a thing that is coiled, twisted, or wound’
Medieval Latin spiralis ‘spiraling’
Middle French spirale
English spiral
Today it means
adj wrapped around the centre of the intrafusal fibre
Language periods are conventional ranges, not dates for this word.
Etymograph / annulospiral