Producing or occurring under the surface of the earth.
- ‘It has been somewhat tentatively identified as a primary hypogene mineral in several deposits.’
- ‘As fluids moved out from the intrusions, hypogene mineralization progressed in four stages.’
- ‘He concluded that the pearceite was probably hypogene and did not result from secondary, supergene enrichment.’
Mid 19th century: from hypo- ‘under’ + Greek genēs ‘-born, of a certain kind’.
We take a look at several popular, though confusing, punctuation marks.