préformation

  • 11preformation — preformationary, adj. /pree fawr may sheuhn/, n. 1. previous formation. 2. Biol. (formerly) the theory that the individual, with all its parts, preexists in the germ cell and grows from microscopic to normal proportions during embryogenesis… …

    Universalium

  • 12preformation — noun a) Prior formation b) Any early theory that organisms are fully developed when created and just increase in size …

    Wiktionary

  • 13preformation — See p. theory. * * * pre·for·ma·tion .prē fȯr mā shən n a now discredited theory in biology that every germ cell contains the organism of its kind fully formed and complete in all its parts and that development involves merely an increase in… …

    Medical dictionary

  • 14preformation — Смотри Преформация …

    Энциклопедический словарь по металлургии

  • 15preformation — prɪːfÉ”r meɪʃn / fɔː m n. act of shaping in advance; prior creation, previous production; act of previously taking shape, act of being formed beforehand …

    English contemporary dictionary

  • 16preformation — pre·formation …

    English syllables

  • 17preformation — pre•for•ma•tion [[t]ˌpri fɔrˈmeɪ ʃən[/t]] n. 1) previous formation 2) bio a former biological theory that the individual preexists fully formed in the germ cell and grows from microscopic to normal proportions during the embryo phase • Etymology …

    From formal English to slang

  • 18preformation — /prifɔˈmeɪʃən/ (say preefaw mayshuhn) noun 1. previous formation. 2. Biology a theoretical concept according to which the individual, with all its parts, pre exists in the germ and grows from microscopic to normal proportions during embryogenesis …

  • 19Theorie de la preformation — Théorie de la préformation Homunculus de Hartsoeker La théorie de la préformation a été formulée pour expliquer le développement embryonnaire par le déploiement de structures préexistantes dans l œuf. Cette théorie s est historiquement opposée à… …

    Wikipédia en Français

  • 20Théorie de la préformation — Homunculus de Hartsoeker La théorie de la préformation a été formulée pour expliquer le développement embryonnaire par le déploiement de structures préexistantes dans l œuf. Cette théorie s est historiquement opposée à celle de l’épigénèse qui… …

    Wikipédia en Français