mother of coal
English
[edit]Etymology
[edit]Apparently named by analogy with mother of pearl and mother of vinegar, on the theme of a matrix that produces (or was believed to produce) the end product and also coexists therewith.
Apparently named by analogy with mother of pearl and mother of vinegar, on the theme of a matrix that produces (or was believed to produce) the end product and also coexists therewith.