monopyrenous,a.Bot.|mɒnəʊpaɪˈriːnəs| [f.Gr. µόνο-ς mono- + πῡρήν fruit-stone + -ous. Cf. F. monopyrène.] Having but one stone or kernel: said of fruits. 1706Phillips (ed. Kersey), Monopyrenous Fruit, such Fruit of a Plant, as contains in it only one Kernel, or Seed.1866Treas.Bot., Monopyrenous, containing one stone.