per-grandis, e, adj.,
very large , very great (rare but class.): gemma, Cic. Verr. 2, 4, 27, § 62: vectigal, id. Agr. 1, 4, 9: lucrum, Plaut. Pers. 4, 3, 23: pergrandis natu, very old , very aged , Liv. 29, 29, 6: lapis, Vulg. Josue, 24, 26.
per-grandis e, adj.,very large, vast, immense: gemma: pecuniae summa: pergrandis natu, extreme old ...
An Elementary Latin Dictionary