Last Updated
：2025/11/21
biochemical oxygen demand
Noun
countable
uncountable
Japanese Meaning
水中の有機物を分解するために必要な酸素の量 / 水質汚染の指標として利用される値
（ plural ）
Quizzes for review
The amount of oxygen needed by aerobic microorganisms to decompose all the organic matter in a sample of water; it is used as a measure of pollution.
音声機能が動作しない場合はこちらをご確認ください
See correct answer
biochemical oxygen demand
After the chemical spill, scientists measured a sharp increase in the biochemical oxygen demand in the river, signaling higher levels of biodegradable contamination.
See correct answer
After the chemical spill, scientists measured a sharp increase in the biochemical oxygen demand in the river, signaling higher levels of biodegradable contamination.
音声機能が動作しない場合はこちらをご確認ください
English - English
Word Edit Setting
- Users who have edit permission for words - All Users
- Screen new word creation
- Screen word edits
- Screen word deletion
- Screen the creation of new headword that may be duplicates
- Screen changing entry name
- Users authorized to vote on judging - Editor
- Number of votes required for decision - 1
Sentence Edit Setting
- Users who have edit permission for sentences - All Users
- Screen sentence deletion
- Users authorized to vote on judging - Editor
- Number of votes required for decision - 1
Quiz Edit Setting
- Users who have edit permission for quizzes - All Users
- Users authorized to vote on judging - Editor
- Number of votes required for decision - 1
