noun, plural: acidophiles

An organism that can or must live in an acidic environment


An acidophile is an organism that can or must live in an acidic environment. An acidic environment is one that has a pH below 6. Acidophiles are able to live and thrive to a highly acidic environment, particularly at pH 2.0 or below. Acidophiles are considered as an extremophile.

Some acidophiles are adapted to an acidic environment because of a membrane system that effectively pumps protons out of the intracellular space and consequently helps keep the cytoplasm at or near a neutral pH. Other acidophiles with acidified cytoplasm have proteins that can attain acid stability.

Some of the organisms considered as acidophiles are as follows:

Word origin: acido- (acid) + phile (love)

Also called:

See also:

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