imperforate

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imperforate

[im′pər·fə·rət]
(biology)
Lacking a normal opening.
(graphic arts)
In printing, no perforations between repeated designs, for example, stamps or labels, which are to be used separately.
References in periodicals archive ?
136) The presence of massive pancreatic parenchyma associated with the minor papilla may reflect incomplete migration of the dorsal pancreas and can explain the relatively high percentage of imperforated minor papilla, which occurs in up to 67% of normal pancreas.
The change in larger foraminiferal fauna from porcelaneous imperforated to hyaline perforated forms point to a decrease in water transparency [9].
El complejo cuerpo extremidad, el complejo OEIS (del ingles onphalocele, extrophy, imperforated ano, spinal defects) y la anomalia cordon corto, son 3 entidades que comparten alteraciones estructurales incompatibles con la vida y una prevalencia muy baja en la poblacion general En la literatura, la etiologia de estas malformaciones ha sido estudiada por separado.