ὂ μικρόν
From LSJ
Τὸ μανθάνειν δ' ἥδιστον εὖ λέγοντος, εἰ κέρδος λέγοι → It is the sweetest thing to learn from one speaking well, if they speak profitably
French (Bailly abrégé)
(τό) :
indécl.
omicron (propr. ο petit, càd bref, p. opp. à ὦ μέγα) :
15ᵉ lettre de l'alphabet grec;
comme chiffre, οʹ = 70 - ͵ο et postér. Ο = 70 000.