liter

[ lee-ter ]

noun

1. a unit of capacity redefined in 1964 by a reduction of 28 parts in a million to be exactly equal to one cubic decimeter. It is equivalent to 1.0567 U.S. liquid quarts and is equal to the volume of one kilogram of distilled water at 4°C. : l

liter

/ ˈliːtə /

noun

1. the US spelling of litre

liter

/ lē′tər /

1. The basic unit of liquid volume or capacity in the metric system, equal to 1.06 quart or 2.12 pints.
2. See Table at measurement
3. The basic unit of dry volume or capacity in the metric system, equal to 0.90 quart or 1.82 pint.
4. See Table at measurement

Word History and Origins

Origin of liter¹

1800–10; < French litre, back formation from litron an old measure of capacity, derivative (with -on noun suffix) of Medieval Latin litra < Greek lítra pound

Example Sentences

The groups pointed out that the study found low IQ associations only at fluoride concentrations more than double those of the current recommendation of 0.7 milligrams per liter.

From Los Angeles Times

Public Health Service in 1962 recommended a fluoridation level of 0.7 to 1.2 mg per liter in drinking water supplies.

From Los Angeles Times

The NTP concluded that drinking water with more than 1.5 milligrams of fluoride per liter is consistently linked with children having lower IQs.

From Salon

"The NTP monograph concluded that higher levels of fluoride exposure, such as drinking water containing more than 1.5 milligrams of fluoride per liter, are associated with lower IQ in children," NTP Director Dr. Rick Woychik said in a statement.

From Salon

More recent research has found that typical water bottles have far higher levels: 240,000 particles per liter on average, taking into account smaller fragments known as "nanoplastics."

From Salon