固体(こたい)

こたい
noun
solid; solid body
1. solid; solid body; solid state
One of the three basic states of matter, in which a substance maintains a fixed shape and volume. Contrasts with liquid and gas.
氷(こおり)は水(みず)の固体(こたい)だ。
Ice is the solid form of water.
物質(ぶっしつ)の状態(じょうたい)は固体(こたい)、液体(えきたい)、気体(きたい)の3つに分(わ)けられる。
The states of matter are divided into three: solid, liquid, and gas.
温度(おんど)が下(さ)がると、液体(えきたい)は固体(こたい)に変(か)わる。この変化(へんか)を凝固(ぎょうこ)という。
When the temperature drops, a liquid changes into a solid. This change is called solidification.

USAGE NOTES:
固体(こたい) is a scientific term used in physics, chemistry, and everyday language when discussing states of matter.

RELATED TERMS:

  • 液体(えきたい) (liquid)
  • 気体(きたい) (gas)
  • 固体(こたい)・液体(えきたい)・気体(きたい) is the standard order when listing the three states

SIMILAR WORDS:

  • 個体(こたい) (same reading, different kanji) means an individual organism — do not confuse

COMMON COLLOCATIONS:

  • 固体(こたい)燃料(ねんりょう) (solid fuel)
  • 固体(こたい)から液体(えきたい)に変(か)わる (change from solid to liquid)
  • 固体(こたい)の状態(じょうたい) (solid state)
general
Added 2026.3.4 13:34
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