'Siliceous' definitions:
Definition of 'siliceous'
From: WordNet
adjective
Relating to or containing or resembling silica; "gritrock is siliceous sandstone" [syn: siliceous, silicious]
Definition of 'Siliceous'
From: GCIDE
- Siliceous \Si*li"ceous\, a. [L. siliceus, fr. silex, silicis, a flint.] Of or pertaining to silica; containing silica, or partaking of its nature. [Written also silisious.] [1913 Webster]