The Collaborative International Dictionary
Porcelaneous
Porcelaneous \Por`ce*la"ne*ous\, Porcellaneous \Por`cel*la"ne*ous\, a.
Of or pertaining to porcelain; resembling porcelain; as, porcelaneous shells.
(Zo["o]l.) Having a smooth, compact shell without pores; -- said of certain Foraminifera.
Wiktionary
porcelaneous
a. porcellaneous