Likewise or similarly in other lexica; references at Photius phi201-202 Theodoridis. The primary headword is the neuter nominative/accusative plural of a superlative adjective, perhaps used adverbially (glossed with a comparative). The secondary one is a middle/passive participle, again neuter nominative accusative plural, of a cognate verb (phi 439). Both, presumably, are extracted from somewhere.
See also phi 438, phi 439, phi 440.