aphotic

As an adjective aphotic

is having no light, especially no sunlight.

As a noun null is

zero, nil; the cardinal number before einn.

As a letter s

is the letter s with a.

As an adjective aphotic is

having no light, especially no sunlight.

As adjectives the difference between aprotic and aphotic

is that aprotic is that does not contain (or cannot donate) a hydrogen ion (proton) while aphotic is having no light, especially no sunlight.

As adjectives the difference between aptotic and aphotic

is that aptotic is uninflected or aptotic can be (biology|rare) while aphotic is having no light, especially no sunlight.

As adjectives the difference between aphetic and aphotic

is that aphetic is (linguistics) of, relating to, or formed by aphesis while aphotic is having no light, especially no sunlight.

As adjectives the difference between aphonic and aphotic

is that aphonic is of, relating to, or exhibiting aphonia; unable to speak while aphotic is having no light, especially no sunlight.

As adjectives the difference between aphotic and mesopelagic

is that aphotic is having no light, especially no sunlight while mesopelagic is describing a pelagic zone of the oceans between the photic epipelagic and the aphotic bathypelagic zones.