agenesis

agenesis /agen·e·sis/ (a-jen´ĕ-sis) absence of an organ, particularly that due to nonappearance of its primordium in the embryo.

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gonadal agenesis  complete failure of gonadal development, as in Turner's syndrome.

nuclear agenesis  Möbius' syndrome.

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a·gen·e·sis (-jn-ss)

n.

Absence or incomplete development of an organ or body part.

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agenesis

[ājen′əsis]

Etymology: Gk, a + genein, not to produce

1 a congenital absence of an organ or part, usually caused by a lack of primordial tissue and failure of development in the embryo.

2 impotence or sterility. Also called agenesia. Compare dysgenesis. agenic, adj.

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agenesis (ājen´sis),

n the defective development or congenital absence of parts.

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agenesis

absence of an organ due to nonappearance of its primordium in the embryo.

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agenesis

Embryology The incomplete or nondevelopment of a body part, organ or tissue. See Anal agenesis, Renal agenesis.