2. Table salt. This is the most common kind of salt, and the one most used in the our kitchen. Sourced from salt mines, it is then refined and most minerals removed. Anti-caking agents are added to prevent clumping, as is iodine, a nutrient not always naturally present in salt.
Opaque is from a Latin word meaning dark, and that was its original sense in English, but it now means literally not transparent or metaphorically hard to understand; unclear: Some of his sentences are really opaque..
Full Definition of OBSIDIAN. : a dark natural glass formed by the cooling of molten lava. See obsidian defined for English-language learners. See obsidian defined for kids. ADVERTISEMENT.ull Definition of OBSIDIAN. : a dark natural glass formed by the cooling of molten lava. See obsidian defined for English-language learners. See obsidian defined for kids. ADVERTISEMENT.