grandĭo, īre, v. a. and n. [grandis] (ante-class.).
I 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.).—
II 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.