The Collaborative International Dictionary
Gypsiferous
Gypsiferous \Gyp*sif"er*ous\ (j[i^]p*s[i^]f"[~e]r*[u^]s), a. Containing gypsum.
Wiktionary
gypsiferous
a. Containing gypsum.
Usage examples of "gypsiferous".
They go over the interior surface of the walls, breaking off projections and filling up the interstices with small stones, and then they smoothly plaster the walls and the inside of the hatchway with mud, and sometimes whitewash them with a gypsiferous clay found in the neighborhood.