古紙(こし)

こし
noun
waste paper; used paper; recycled paper
1. waste paper; used paper; recycled paper
paper that has been used and is collected for recycling; waste paper
古紙(こし)を回収(かいしゅう)する。
To collect waste paper.
古紙(こし)はリサイクルに出(だ)してください。
Please put waste paper out for recycling.
この製品(せいひん)は古紙(こし)100(ひゃく)パーセントで作(つく)られている。
This product is made from 100% recycled paper.

A compound of 古(こ) (old, used) and 紙(し) (paper). Common in environmental and recycling contexts. In Japan, waste paper collection is an important part of the detailed garbage separation system.

COMMON COLLOCATIONS:

  • 古紙(こし)回収(かいしゅう): waste paper collection
  • 古紙(こし)リサイクル(りさいくる): paper recycling
  • 古紙(こし)配合率(はいごうりつ): recycled paper content ratio
  • 古紙(こし)100(ひゃく)パーセント: 100% recycled paper

SIMILAR WORDS:

  • 再生紙(さいせいし): recycled paper — emphasizes that the paper has been reprocessed
  • 廃紙(はいし): waste paper — more formal, emphasizes discarding
general
Added 2026.4.4 4:21
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