Meaning of Hilt's law | Babel Free
Definitions
A geological law stating that the deeper coal is found, the higher its rank (carbon content). It holds true when the thermal gradient is entirely vertical.
CEFR level
B2
Upper Intermediate
This word is part of the CEFR B2 vocabulary — upper intermediate level.
This word is part of the CEFR B2 vocabulary — upper intermediate level.