<geology> A soft, earthy, dark-coloured rock or clay derived from the alteration of basalt.

Origin: G. Wacke, MHG.wacke a large stone, OHG. Waggo a pebble.

(01 Mar 1998)

Wachstein, Max, Wachstein-Meissel stain, Wachter, Herman < Prev | Next > Wada, J, Wada test, wadd, wadding

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