[1] i.e. (in each case) the general concept or process of this.
[2] Aorist middle participle, masculine nominative singular; evidently quoted from somewhere. See further, next note.
[3] This addition differentiates the third person singular, aorist indicative active, of the verb o)ni/hmi -- perhaps quoted from Homer, Odyssey 14.67 -- from the similar-looking but unrelated aorist middle participle (masculine singular nominative) of the verb w)ne/omai and the noun cognate with it, with which the entry has begun. LSJ entries for the two verbs at web addresses 1 and 2; and cf. omega 114.