gypsa

A geologist examines a white gypsa sample in the field.

Definition

1. Noun (plural: gypsa):
   • A mineral: "gypsa" is the plural form of "gypsum," a soft sulfate mineral composed of calcium sulfate dihydrate, used in making plaster, drywall, and as a soil conditioner. It is typically white or colorless and forms in sedimentary environments.

Usage Examples

• Noun:
  • The quarry produced large deposits of gypsa for construction. (Multiple occurrences or types of the mineral gypsum.)
  • Geologists studied the gypsa found in the ancient seabed. (The mineral specimens in their plural form.)

Advanced Usage

• "gypsa" in scientific contexts: The plural "gypsa" is rarely used in modern English; "gypsum" is both singular and mass noun, and "gypsums" is the more common plural. "Gypsa" appears in specialized geological or linguistic discussions.
  • The classification of gypsa in the region includes both crystalline and fibrous varieties. (The different forms of gypsum mineral deposits.)

Variants and Related Words

• Gypsum (n): the singular and most common form of the word.
  • Gypsum is used to make plaster of Paris. (The mineral as a substance.)
• Gypsiferous (adj): containing or yielding gypsum.
  • The gypsiferous soil supported unique plant species. (Soil rich in gypsum.)
• Gypsography (n): the study or description of gypsum deposits.
  • His research in gypsography focused on sedimentary layers. (The scientific field.)

Synonyms

• Calcium sulfate dihydrate: the chemical name for gypsum.
• Plaster stone: a common term for gypsum used in construction.
• Selenite: a crystalline form of gypsum (though often considered distinct).

Related Idioms

• There are no common idioms using "gypsa" or "gypsum" due to its specialized nature.

Phrasal Verbs

• There are no phrasal verbs associated with "gypsa" or "gypsum."

Notes

• The reference definition from the Vietnamese-English dictionary (gypsa /'dʤipsəm/) appears to be a mis-transcription: "gypsa" is likely a misspelling or variant of "gypsum" (pronounced /ˈdʒɪp.səm/). The plural "gypsa" is archaic or technical, while "gypsums" is standard. Use "gypsum" for singular or mass noun contexts.