turb-, turbin-, turbo-, turbu- +

1. Belonging to the Turbellaria, a class of platyhelminths or flatworms, mostly aquatic and having cilia on the body surface.
2. Etymology: from New Latin Turbellāria, class name, from Latin turbella, "bustle"; diminutive of turba, "turmoil" based on the motion of their cilia in the water.

1. Not clear or transparent because of stirred-up or suspended sediment or foreign particles; clouded; opaque; obscured; thick with roiled sediment; not clear: "We could only see the turbid waters near the waterfall."
2. Thick, heavy, dark, or dense; such as, smoke, fog, air, or clouds.
3. Confused, disturbed, disorientated, or in a state of turmoil; muddled; disturbed: "He was in a turbid and restless condition as a result of the auto accident."

1. An instrument that measures the transmission and scattering of light in a fluid with suspended solids.
2. Another instrument which estimates the growth of microorganisms by analyzing the turbidity of a sample.

A light beam is passed through the prepared culture and the decrease in absorbance is measured.

A method for determining the concentration of a substance in a solution by the degree of cloudiness or turbidity it causes or by the degree of clarification it induces in a turbid solution.

A sediment or rock deposited from a turbidity current.

1. Any measure of the degree of transparency of a fluid substance; such as, drinking water.
2. Muddiness created by stirring up sediment or having foreign particles suspended.
3. Having sediment or foreign particles stirred up or suspended; muddy.
4. A measure of the opacity of the atmosphere.

A perfectly clear sky has a turbidity of "0", and a completely opaque sky has a turbidity of "1".

1. A description of having sediment or foreign particles stirred up or suspended; muddily: turbinal water.
2. Characteristic of being heavy, dark, or dense; such as, smoke or fog.
3. Descriptive of a state of turmoil; muddled: turbid feelings.

1. Muddiness created by stirring up sediment or having foreign particles suspended.
2. The quality or state of being turbid; muddiness; foulness.

A device designed to maintain a bacterial culture at a constant turbidity.

Rolled in a spiral; scroll-like; turbinate; applied to the thin, plicated, bony or cartilaginous plates which support the olfactory and mucous membranes of the nasal chambers.

There are usually several of these plates in each nasal chamber. The upper ones, connected directly with the ethmoid bone, are called ethmoturbinals, and the lower, connected with the maxillae, maxillo-turbinals.

Incurved portions of the wall of the nasal chamber are sometimes called pseudoturbinals, to distinguish them from the true turbinals which are free outgrowths into the chambers.

1. Having the shape of an inverted cone; scroll-like; whorled; spiraled.
2. A bone shaped like a top. The turbinate is a bone in the nose which is an extension of the ethmoid bone, is situated along the side wall of the nose, and is covered by mucous membrane.

The word turbinate is related to a turbine; derived from Latin turbo, "a whorl", "an eddy", or "a spiral shell". The turbinate in the nose was so named because it is a curled shelf of bone protruding from the lateral (side) wall of the nasal cavity.

Although tornado is said by some to come from Latin turbo, it apparently does not. Etymologists say tornado is more closely related to Latin tonare, "to thunder".

1. The shape of an inverted cone.
2. Scroll-like; whorled; spiraled.
3. In anatomy, a reference to certain scroll-like, spongy bones of the nasal passages in humans and other vertebrates.

1. Any of various machines having a rotor, usually with vanes or blades, driven by the pressure, momentum, or reactive thrust of a moving fluid; such as, steam, water, hot gases, or air, either occurring in the form of free jets or as a fluid passing through and entirely filling a housing around the rotor.
2. A general term for any machine capable of generating rotary mechanical power by converting the kinetic energy of a stream of fluid; such as water, steam, or hot gas.

Turbines operate through the principle of impulse or reaction, or a combination of the two.

Turbines have been around for hundreds of years

• Primitive hydraulic turbines made of wooden discs carrying straight blades were believed to exist in Egypt and Mesopotamia in the 5th century B.C.
• Turbines were also in existence in ancient India and China in about the same time period.
• These early machines were used for milling corn and other cereals.
• Until the end of the Middle Ages, hydraulic and wind turbines were the only non-animal source of mechanical power.
• The modern development of the hydraulic turbine began towards the end of the 18th century where it powered sawmills, textile, and manufacturing industries.
• The first steam turbines in commercial service were installed in the norther United States by W. Avery, in 1831, to power some sawmills.
• Modern development of steam turbines began in the 1920s when large industrial groups like General Electric, Allis-Chalmers, Westinghouse, and Brown-Boveri applied these machines to generate electricity.
• The significant advances for the gas turbine came from its aeronautic applications.
• The majority of fossil fuel thermo-electrical conversion locations use steam turbines, and gas turbines as mechanical converters.

Removal of a turbinate bone.

The turbinate is a bone in the nose; and it is an extension of the ethmoid bone which is situated along the side wall of the nose, and is covered by mucous membrane.

Submucous turbinectomy, or the removal of the turbinate bone without removing the overlying mucous membrane, has been found to reduce nasal discharge, sneezing, and nasal stiffness in patients with perennial allergic rhinitis (annual runny nose from allergy).

An electrical alternator which is driven by a steam turbine.