nerval en · ADJ
Etymology
From nerve + -al.
Meanings
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(nonstandard, not-comparable, obsolete) Of or relating to nerves.
In the late, by causing absorption of inflammatory products, the repeated mechanical effect of manipulation and percussion upon old neuralgia bennumbs and lessens the sensibility of the nerval filaments, and gradually decreases it, hence its use in chronic sciatica […]
1889 September 14, “Chronic Sciatica”, in The Journal of the American Medical Association: