grandio, īre, v. a. and n. grandis (ante-class.). Act., to make great, increase, enlarge: grandire est grandem facere, Varr. Rer. Divin. Lib. I.: cum aut humus semina concipere non possit, aut recepta non reddat, aut edita grandire nequeat, Plaut. Aul. (1, 1, 10): Testudineum istum tibi ego grandibo gradum, Non. 115, 1 sq.

—Mid.: nec grandiri frugum fetum posse, nec mitescere, to become great, to grow (cf. grandesco), Pac. ap. Non. 115, 11 (Fragm. Trag. v. 142 Rib.).

— Neutr., to become great, to grow: Mars pater, te precor, uti tu fruges, frumenta, vineta virgultaque grandire beneque evenire sinas, Cato, R. R. 141, 2.