aqua-, aquatic-, aqui-, aqu-, -aquatically, aque-, -aqueous +

Analytical procedures; such as, oven drying, distillation, or Karl Fischer titration, used to measure the quantity of water present in materials.

A measured amount of a solution of unknown concentration is added to a known volume of a second solution until the reaction between them is complete; the concentration of the unknown solution (the titer) can them be calculated.

A Karl Flischer technique is the titration of a sample with a solution of iodine, pyridine, methanol, and sulfur dioxide which are used to determine trace quantities of water in a sample. The end point is indicated by yellowish color change.

1. Somebody with training and equipment to spend long periods working or swimming underwater.
2. An undersea explorer; especially, one who skin-dives from or lives for an extended period of time in a submerged dwelling.

An irrational fear of water that is related to an abnormal fear of drowning and of death.

Some aquaphobics are afraid of putting their faces into the water and getting it up their noses; when this happens, they have a rapid heartbeat and breathe faster, often inhaling water, which further increases their anxiety.

Someone who is abnormally afraid of water.

1. A board pulled over the water by a motorboat and ridden by a person standing up.
2. A water-skiing board on which somebody stands while being towed by a motorboat.
3. With reference to cars, to rise up onto a thin film of water between the tires and road so that there is no more contact with the road or street.

In other words, if a motor vehicle aquaplanes, it slides out of control on a wet road.

1. City, or cities, near the water; or water city.
2. A name given to several projects of "cities" on and under the water; for example: here is the name of "The 8th Wonder of the world; the Aquapolis, the world's first undersea hotel and resort complex". The Aquapolis Hotel says that it will "boast over 500 rooms, all of which will have an ocean view" (below the surface). Located at Mykonos, Cydades Islands, Greece.

Another term for hydroponics or the cultivation of plants in a nutrient solution (water) rather than in soil.

A reference to aquapontics.

Aquaponic systems contain three parts: fish to produce ammonia, bacteria to break the ammonia down to nitrates, and plants to feed on the nitrates to create fishfood to start the cycle all over again.

A mini aquaponics system is an excellent means of demonstrating aquaponic principles and the nitrification cycle in a recirculating aquatic environment.

1. The integration of aquaculture and hydroponics.

An aquaculture is used to continuously generate a nutrient-rich solution to feed a hydroponic garden. Aquaponic systems can be used to duplicate controlled wetland conditions that are useful for reclaiming potable water from typical household sewage, in addition to generating a continual supply of food with minimal fertilizer use.

2. The integration of hydroponics (growing plants without soil) and aquaculture (the cultivation of the natural produce of water such as fish or shellfish).

Aquaponic systems combine the best of both worlds. Fish are raised in one area and the plants in another. The waste from the fish is pumped into a holding area where it is usually treated with bacterial agents that help break it down. Then the treated waste is pumped in the plant area to be used as fertilizer for growing. The used water is pumped from the plant area back to the fish.

1. A water channel.
2. Any of a family of proteins found in the plasma membranes of plant and animal cells and forming a functional component of water channels.

Aquaporins form pores in the membranes of cells and selectively conduct water molecules through the membrane, while preventing the passage of ions (such as sodium and potassium) and other small molecules.

Aquaporins are typically composed of identical subunit proteins. Water molecules traverse the narrowest portion of the water channel in single file. The presence of water channels increases the permeability of membranes to water by as much as ten-fold.

Aquaporins prevent us from dying of dehydration by reabsorbing 99% of the water in the kidney.

any of a family of proteins found in the plasma membranes of plant and animal cells and forming a functional component of water channels.

Water that is fit or suitable for drinking because of cleanliness and being uncontaminated.

1. The introduction of water subcutaneously for the relief of pain.
2. A rarely used term in medicine for a hypodermic injection of water.

Pure water; especially, distilled water.

1. Royal water: a fuming, highly corrosive mixture of nitric and hydrochloric acids.
2. Another term for nitrohydrochloric acid.

Called "royal water" because of its power to dissolve gold.

Aqua regia is used for testing metals and dissolving platinum and gold.

1. A painting technique that uses transparent washes of watercolor.
2. A painting produced using the aquarelle technique.
3. A printed picture that has been colored manually by applying watercolor through stencils, each color requiring a different stencil.