See Mold, Molder, Moldy, etc.
Fungi characterized by their branched filamentous structure (mycelium), including mushrooms and smaller fungi.
(1) They can cause food spoilage very rapidly, e.g. white Mucor, grey-green Penicillium, black Aspergillus. Many also produce mycotoxins. (2) Some are used for large-scale manufacture of citric acid (Aspergillus niger), ripening of cheeses (Penicillium spp.), and as sources of enzymes for industrial use. (3) A number of foods are fermented with moulds. (4) The mycelium of Fusarium spp. is used as mycoprotein. (5) Most of the antibiotics are mould products.
British variants of mold, molding.
1. The hollow former into which molten material (typically metal) is poured or soft plastic material is pressed to harden into a required predetermined shape. The simplest type of mould is a one-piece open former in which the casting emerges with one flat unshaped face. Two- and three-piece moulds for use in metalworking were available from middle Bronze Age times onwards. Moulds were also used for making figurines and occasionally for making pottery (e.g. relief-decorated Samian ware).
2. [De].In American archaeology this term is used to refer to the topsoil.