prae-cŏquo

xi, ctum, 3, v. a.
I. To boil beforehand, Plin. 18, 29, 69, § 288: rutam, Cael. Aur. Acut. 2, 34, 136; id. Tard. 4, 3, 26.—
II. To ripen fully: praecocta uva (sole), Plin. 14, 9, 11, § 81.
Lewis & Short
A Latin Dictionary, 1879
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