melanin

As a letter s

is the letter s with a.

As a proper noun melanin is

.

As a proper noun melanin

is .

As a noun null is

zero, nil; the cardinal number before einn.

As a proper noun melanin

is .

As an adjective undefined is

lacking a definition or value.

As a proper noun melanin

is .

As a noun carotene is

carotene.

As a noun pheomelanin

is a brown pigment produced by melanocytes.

As a proper noun melanin is

.

As a proper noun melanin

is .

As a noun phenol is

phenol.

As nouns the difference between melanin and melanin

is that melanin is any of a group of naturally occurring dark pigments, especially the pigment found in skin, hair, fur, and feathers while melanin is any of a group of naturally occurring dark pigments, especially the pigment found in skin, hair, fur, and feathers.

As a proper noun melanin

is .

As a noun vitiligo is

vitiligo (patchy loss of skin pigmentation).

As nouns the difference between melanin and chlorophyll

is that melanin is any of a group of naturally occurring dark pigments, especially the pigment found in skin, hair, fur, and feathers while chlorophyll is any of a group of green pigments that are found in the chloroplasts of plants and in other photosynthetic organisms such as cyanobacteria.