ἀρθρικός

ή, όν, Adv.
A. of or for the joints, Gal. 19.85.
II. (ἄρθρον II) of, belonging to the article, in Gramm., A.D. Synt. 6.5,al. Adv. ‐ῶς ib.33.6.
Liddell, Scott & Jones
A Greek-English Lexicon, 1940
An open-access project