cortices. 1  1a (1) : the outer or superficial part of an organ or bodily structure (such as the kidney, adrenal gland, or cerebellum or a bone); especially : cerebral cortex (2) : the proteinaceous usually pigmented layer of a hair below the cuticleb : the outer part of some organisms (such as paramecia)
If a toenail has completely fallen off, it can take up to 18 months for it to grow back. A toenail can take longer to grow back if the nail bed has permanent damage. In some cases, old nails do not completely fall off, and they act as a protective...
But it grows but it takes some time of One year to reach its complete structure. Six months is the typical grow out time for a toenail. For a fingernail, it is typically 3 months. If it has been completely removed/operated upon it may take anything between 6â9 months for proper regrowth, provided hygiene is maintained.