preformation
英 [ˌpri:fɔ:'meɪʃən] 美 [ˌprifɔ'meɪʃən]

n.

预先形成；

英英释义

preformation[ ,pri:fɔ:'meiʃən ]

• n.a theory (popular in the 18th century and now discredited) that an individual develops by simple enlargement of a tiny fully formed organism (a homunculus) that exists in the germ cell

  同义词：theory of preformation

权威例句

Preformation
Cluster preformation as barrier penetrability
Organ preformation in mayapple as a mechanism for historical effects on demography.
$\alpha$ particle preformation in heavy nuclei and penetration probability
Preformation or Epigenesis?. (Book Reviews: Oogenesis. The storage of developmental information)
Extreme preformation in alpine Polygonum viviparum: an architectural and developmental analysis.
Mechanisms of metazoan germ cell specification: epigenesis and preformation
Mechanisms of germ cell specification across the metazoans: epigenesis and preformation.
Theories in early embryology: close connections between epigenesis, preformationism, and self-organization
Crown architecture of Larix laricina saplings: shoot preformation and neoformation and their relationships to shoot vigour