dipyrenous,a.Bot.|daɪpaɪˈriːnəs| [f.Gr. δι-, twice + πῡρήν fruit-stone + -ous.] Containing two fruit-stones. 1866in Treas.Bot.1880Gray Struct.Bot. vii. §2. 298 The fruits are dipyrenous, tripyrenous, tetrapyrenous, etc., according as they contain 2, 3, or 4 pyrenæ.