One of the mysteries of the English language finally explained.
A soft white or grey mineral consisting of hydrated calcium sulphate. It occurs chiefly in sedimentary deposits and is used to make plaster of Paris and fertilizers, and in the building industry.
plaster of parisView synonyms
- ‘Invisible traces of quartz, calcite, gypsum and feldspar, the dust of its resting place for more than two millennia, cling to the bronze.’
- ‘A white material, probably gypsum, was used to preserve the body of what archaeologists hope is a Roman, buried around 300AD.’
- ‘They are cast in white gypsum and hang on a deep blue wall.’
- ‘In each of these settings, progressive evaporation of seawater leads to precipitation of calcite and gypsum followed by halite.’
- ‘To neutralize the soil of a bare spot caused by dog urine, pour tomato juice over the area or treat the soil with powdered gypsum.’
- ‘Thin crusts of small rhodochrosite crystals on high-grade manganese ore were covered by masses of clear gypsum.’
- ‘Quartz and gypsum are other familiar examples of crystalline structures.’
- ‘Quartz is the dominant mineral in veins in siliceous rocks, calcite in limestones, and gypsum in gypsiferous sediments.’
- ‘Other associated minerals include tetrahedrite, calcite, and gypsum.’
- ‘Mineral resources include phosphates, salt, and gypsum, and manufacturing industry includes textiles, cement, and chemicals.’
- ‘It is dominated by the deposition of calcite with minor pyrite, marcasite, barite, anhydrite and gypsum.’
- ‘Among the gravels there were shiny crystals of the mineral gypsum, the residue left behind when seawater evaporates.’
- ‘The sulfur dioxide in the gas reacts with the limestone to form gypsum (calcium sulfate).’
- ‘The lake contained an area of 3,370 acres and was said to have a practically inexhaustible deposit of salt and gypsum.’
- ‘Colorless gypsum and white pickeringite-halotrichite are the most common efflorescences found on shale.’
- ‘It was pale to medium green and associated with yellow pharmacosiderite and colorless to white gypsum.’
- ‘Most structures were built in limestone gypsum and are an eclectic mix of Assyrian, Hellenistic, Parthian and Roman styles.’
- ‘The mix we use contains compost, peat, perlite, rock phosphates, blood meal, calcite clay and gypsum.’
- ‘Do not use mortar-mill type for mixing gypsum plasters.’
- ‘But as the popularity of drywall, sky-rocketed, gypsum plaster fell out of favor.’
Late Middle English: from Latin, from Greek gupsos.
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