This etymology seems to blend two different etymons. The gloss ἐπὶ τὴν εὐωχίαν "for a good meal" seems to imply that the word is equated with ἄριστος "best". The etymological explanation coming next parses is, however, as a privative compound of ὁρίζω "to draw the limit", from the fact that the time of day is "not determined": as ἄριστον always refers to the morning meal, that can refer to the fact that men have breakfast earlier in the summer than in the winter, according to the hour of sunrise, or to the problem of the definition of δεῖπνον: if the latter is understood as the second meal of the day, then ἄριστον is the first one and is "breakfast", but since in Homer δεῖπνον is the first meal of the day, ἄριστον must refer to a meal which warriors had even before dawn (see Suda, delta 358, in ἄριστον / ἀριστεία), therefore it is "undetermined". Or this "etymology" reflects the fact that scholiasts and lexicographers disagree about when the ἄριστον took place, as for some it was after δεῖπνον and for others before δεῖπνον: in that case it would be a very nice example of etymology reflecting the exegetic process itself. This explanation accounts for the long quantity of the initial [ā], as underlined by the lexicographer: it would result from a contraction (this is not explicitly stated, but this is inferred by the formulation)