light water

American  

noun

1. ordinary water, as opposed to heavy water; water containing the normal proportion of deuterium oxide.

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light water British  

noun

1. a name for water (H 2 O), as distinct from heavy water

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light water Scientific  

1. Ordinary water, H ₂ O.

2. Compare heavy water

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Etymology

Origin of light water

First recorded in 1930–35

Example Sentences

"They'd have a big tray full of chemicals, put a torch to it, set it up and then we used to use the light water then to put it out, it would come out like foam."

From BBC

Light water is the technical name for AFFF, with Ian saying workers were not told anything about chemicals it may contain.

From BBC

The new pools are intended to handle year-round use, incorporating electric pool heaters, salt water and UV light water treatment.

From Los Angeles Times

Around 95% of plants use C3 photosynthesis, in which mesophyll cells -- green spongy cells that live inside leaves -- turn light, water, and carbon dioxide into plant-powering sugars.

From Science Daily

The study verified that wildfire smoke does change light, water temperature and oxygen in lakes -- the basic drivers of lake function and health -- but those changes are as variable as the unique lakes studied.

From Science Daily