The Collaborative International Dictionary
Pumiceous
Pumiceous \Pu*mi`ceous\, a. [L. pumiceus.] Of or pertaining to pumice; resembling pumice.
Douglas Harper's Etymology Dictionary
pumiceous
1670s, from Latin pumiceus "of pumice stone," from pumex (see pumice).
Wiktionary
pumiceous
a. Of or pertaining to pumice; resembling pumice.
Usage examples of "pumiceous".
Half way up was a square enclosure of some greyish stone, which I found subsequently was built partly of coral and partly of pumiceous lava.