Find the word definition

Crossword clues for turbidity

The Collaborative International Dictionary

Turbidity \Tur*bid"i*ty\, n. Turbidness.

Douglas Harper's Etymology Dictionary

1782, from Medieval Latin turbiditas, from Latin turbidus (see turbid). Turbidity current is from 1939.


n. the state of being turbid; turbidness


n. muddiness created by stirring up sediment or having foreign particles suspended [syn: turbidness]


Turbidity is the cloudiness or haziness of a fluid caused by large numbers of individual particles that are generally invisible to the naked eye, similar to smoke in air. The measurement of turbidity is a key test of water quality.

Fluids can contain suspended solid matter consisting of particles of many different sizes. While some suspended material will be large enough and heavy enough to settle rapidly to the bottom of the container if a liquid sample is left to stand (the settable solids), very small particles will settle only very slowly or not at all if the sample is regularly agitated or the particles are colloidal. These small solid particles cause the liquid to appear turbid.

Turbidity (or haze) is also applied to transparent solids such as glass or plastic. In plastic production haze is defined as the percentage of light that is deflected more than 2.5° from the incoming light direction.

Usage examples of "turbidity".

I believe it was Heezen who once said that no one would ever see a turbidity current and survive.

On the other hand, as much silver nitrate is required to give the yellow turbidity due to silver iodide as would be required if no zinc were present.

The most satisfactory and exact finish is got by ignoring any faint suspicion of a turbidity and accepting the unmistakable turbidity which the next drop of silver nitrate is sure to produce.

It would carry a little vial of nutrient organic matter to Mars, arrange for a sample of Martian soil to be mixed in with it, and observe the changing turbidity or cloudiness of liquid as the Martian bugs (if there were any) grew (if they would).