ろ過(か)

ろか
noun
filtration; filtering
1. filtration; filtering
The process of passing a liquid or gas through a filter to remove solid particles or impurities. Used in scientific, industrial, and daily life contexts.
水(みず)をろ過(か)する。
To filter water.
コーヒーのろ過(か)には紙(かみ)フィルターを使(つか)う。
A paper filter is used for filtering coffee.
浄水場(じょうすいじょう)では何(なん)段階(だんかい)ものろ過(か)装置(そうち)を通(とお)して水(みず)をきれいにしている。
Water treatment plants purify water by passing it through multiple stages of filtration equipment.

USAGE:
ろ過(か) is written with the kanji 濾(ろ)過(か), but since 濾(ろ) is not a standard-use kanji (not in the 常用(じょうよう)漢字(かんじ) list), it is typically written in mixed form as ろ過(か).

COMMON COLLOCATIONS:

  • ろ過(か)する (to filter)
  • ろ過(か)装置(そうち) (filtration device/equipment)
  • ろ過(か)器(き) (filter)
  • ろ過(か)水(すい) (filtered water)
general
Added 2026.3.5 17:43
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