ingrowth

[ in-grohth ]

/ ˈɪnˌgroʊθ /

growth inward.

something formed by growth inward.

Origin of ingrowth

First recorded in 1865–70; in-¹ + growth

In the course of embryonic development all glands are formed by an ingrowth of the surface.

Disease and Its Causes |William Thomas Councilman
The fins, both median and paired, obtain their musculature by the ingrowth into them of muscle buds from the adjoining myotomes.

Encyclopaedia Britannica, 11th Edition, Volume 14, Slice 3 |Various
But even in stage B there are beginnings of a cellular ventral wall derived from an ingrowth of cells from the two sides.

The Works of Francis Maitland Balfour, Volume 1 |Francis Maitland Balfour
In these instances there is no commencement of an ingrowth in the manner supposed for meroblastic ova.

The Works of Francis Maitland Balfour, Volume 1 |Francis Maitland Balfour

Because the mouth and throat are lined by an ingrowth from the external skin; the origin and growth of this is seen in the embryo.

Stories of the Universe: Animal Life |B. Lindsay

ingrowth

/ (ˈɪnˌɡrəʊθ) /

the act of growing inwards the ingrowth of a toenail

something that grows inwards

ingrowth

[ ĭn′grōth′ ]

Something that grows inward or into a part of the body.