παρεν-θήκη · paren-thēkē — LSJ
something put in beside, addition, in completion of others, by way of parenthesis, business in the intervals of, interposed
something put in beside, addition, τοιήνδε . . παρενθήκην ἐποιήσατο, of works undertaken in completion of others, Hdt. 1.186 ; παρενθήκην ἔχρησε ἐς Μιλησίους delivered an oracle by way of parenthesis, Id. 6.19 ; τοῦ λόγου π. ποιεέσκετο τήνδε, ὡς . . Id. 7.5, cf. 171 ; ἑτέρας τοῦ πολέμου π. ἐποιεῖτο undertook other business in the intervals of the war, Plu. Pomp. 41 ; π. ὄψου, = παροψώνημα, Poll. 6.56 ; of a remedy interposed in a difficult situation, Lib. Or. 59.95.
II smaller wares taken as an addition to the cargo
smaller wares taken as an addition to the cargo, opp. ἡ ἐμπορία, Plu. Symp. 2.151e, cf. Poll. 1.99, Hsch.