hydrous

IPA/ˈhaɪ.drəs/
KK[hˈaɪdrəs]IPA/ˈhaɪ.drəs/

hydrous — adjective

  • hydrouspositive
  • more hydrouscomparative
  • most hydroussuperlative

1. describes a substance whose molecules include water that is chemically attached

1.形容詞C1
釋義

describes a substance whose molecules include water that is chemically attached to them — not just water on the surface, but water locked inside the crystal or molecular structure, such as in certain minerals or compounds

例句

Keiko heated the blue hydrous copper sulfate crystals until they turned white and powdery.

hydrous + copper sulfate — a common school chemistry example

Gypsum is a soft hydrous mineral that forms when seawater evaporates in hot climates.

common hydrous mineral: gypsum

同義詞
  • hydrated

    more common in everyday chemistry; 'hydrated' also describes water added to a compound, while 'hydrous' is mostly used in geology and mineralogy

反義詞
  • anhydrous

    the direct opposite — describes a substance that contains no chemically bonded water, e.g. anhydrous ammonia

文法句型

hydrous + noun

用法筆記

Primarily a technical term in chemistry, geology, and materials science. The opposite is 'anhydrous', which describes a substance with no chemically combined water. Do not confuse with 'wet' or 'moist', which describe surface water only.

常見錯誤

❌The towel is hydrous after washing it.
✅The towel is wet after washing it.
💡'hydrous' means water is chemically bonded, not just on the surface.
❌Hydrous cement is mixed with water to build walls.
✅Hydrous minerals contain water in their crystal structure.
💡It is not a synonym for 'mixed with water' or 'wet'.