Last Updated：2025/11/27

(chemistry, American spelling) Water where both the hydrogen and oxygen atoms have been replaced by less common isotopes.

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doubly labeled water

Source Word

doubly labeled water

US uncountable

(chemistry, American spelling) Water where both the hydrogen and oxygen atoms have been replaced by less common isotopes.

Japanese Meaning

水素と酸素の両方が希少な同位体に置換された水。

In metabolic studies, researchers often administer doubly labeled water to track energy expenditure over several weeks.

代謝研究では、研究者はしばしば水素と酸素の両方がより希少な同位体に置換された水を投与して数週間にわたるエネルギー消費量を追跡します。

Sense（1）

(chemistry, American spelling) Water where both the hydrogen and oxygen atoms have been replaced by less common isotopes.

Deuterium oxide-18 (D₂¹⁸O) is one kind of doubly labeled water.