Preformation
[pree-fawr-mey-shuh n] /ˌpri fɔrˈmeɪ ʃən/
noun
1.
previous formation.
2.
Biology. (formerly) the theory that the individual, with all its parts, preexists in the germ cell and grows from microscopic to normal proportions during embryogenesis (opposed to epigenesis).
preformation
/ˌpriːfɔːˈmeɪʃən/
noun
1.
the act of forming in advance; previous formation
2.
(biology) the theory, now discredited, that an individual develops by simple enlargement of a fully differentiated egg cell Compare epigenesis (sense 1)
Read Also:
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noun 1. the shape and size of a book as determined by the number of times the original sheet has been folded to form the leaves. Compare duodecimo, folio (def 2), octavo, quarto. 2. the general physical appearance of a book, magazine, or newspaper, such as the typeface, binding, quality of paper, margins, etc. 3. […]
- Preformed
verb (used with object) 1. to form beforehand. 2. to determine or decide beforehand: to preform an opinion. 3. to shape or fashion beforehand: to preform a mold. noun 4. biscuit (def 5). 5. any of various uncompleted objects of manufacture after preliminary shaping.
- Preformulated
verb (used with object), formulated, formulating. 1. to express in precise form; state definitely or systematically: He finds it extremely difficult to formulate his new theory. 2. to devise or develop, as a method, system, etc. 3. to reduce to or express in a formula. verb (transitive) 1. to put into or express in systematic […]
- Preformulation
verb (used with object), formulated, formulating. 1. to express in precise form; state definitely or systematically: He finds it extremely difficult to formulate his new theory. 2. to devise or develop, as a method, system, etc. 3. to reduce to or express in a formula. verb (transitive) 1. to put into or express in systematic […]
- Prefrontal
adjective, Anatomy. 1. anterior to, situated in, or pertaining to the anterior part of a frontal structure. adjective 1. situated in, involving, or relating to the foremost part of the frontal lobe of the brain prefrontal pre·fron·tal (prē-frŭn’tl) adj. Of, relating to, or situated in the anterior part of the frontal lobe. Situated anterior to […]
