acidocaldarius

From acidus (“sour, acid”) +‎ caldārius (“relating to hot water”).

acidocaldārius (feminine acidocaldāria, neuter acidocaldārium); first/second-declension adjective

1. (New Latin) A specific epithet for organisms that live in hot, acidic water

• Used exclusively as a taxonomic epithet and thus normally in the nominative singular; other inflections may be theoretical or rarely found.

First/second-declension adjective.

• Sulfolobus acidocaldarius