Dictionary » S » Siphon



1. A device, consisting of a pipe or tube bent so as to form two branches or legs of unequal length, by which a liquid can be transferred to a lower level, as from one vessel to another, over an intermediate elevation, by the action of the pressure of the atmosphere in forcing the liquid up the shorter branch of the pipe immersed in it, while the continued excess of weight of the liquid in the longer branch (when once filled) causes a continuous flow. The flow takes place only when the discharging extremity of the pipe ia lower than the higher liquid surface, and when no part of the pipe is higher above the surface than the same liquid will rise by atmospheric pressure; that is, about 33 feet for water, and 30 inches for mercury, near the sea level.

2. (Science: zoology) One of the tubes or folds of the mantle border of a bivalve or gastropod mollusk by which water is conducted into the gill cavity. The anterior prolongation of the margin of any gastropod shell for the protection of the soft siphon.

The tubular organ through which water is ejected from the gill cavity of a cephaloid. It serves as a locomotive organ, by guiding and confining the jet of water. Called also siphuncle.

The siphuncle of a cephalop ba7 od shell.

The sucking proboscis of certain parasitic insects and crustaceans.

A sproutlike prolongation in front of the mouth of many gephyreans.

A tubular organ connected both with the oesophagus and the intestine of certain sea urchins and annelids.

3. A siphon bottle.

(Science: physics) inverted siphon, a tube bent like a siphon, but having the branches turned upward; specifically, an oil cup in which oil is carried over the edge of a tube in a cotton wick, and so reaches the surface to be lubricated. Siphon gauge. See Gauge. Siphon pump, a jet pump. See Jet.

Origin: F. Siphon, L. Sipho, -onis, fr. Gr. A siphon, tube, pipe.

(Science: chemistry) To convey, or draw off, by means of a siphon, as a liquid from one vessel to another at a lower level.

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Results from our forum

stem model help?

... I need to be able to passively transport syrup up and down a tube. AKA, no pumps or myself moving things during the processes. I thought about a siphon, but I wouldn't know how to make the water go back up once we siphoned downward. Thanks.

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by Biorandom
Sat Oct 16, 2010 12:04 am
Forum: General Discussion
Topic: stem model help?
Replies: 1
Views: 1202

diff. pollination mechanisms

Pls explain the following pollination mechanisms....... 1. Jaculator mechanism 2. lever mechanism 3. translator mechanism 4. siphon mechanism What are ubisch bodies??

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by agent007
Fri Apr 16, 2010 1:27 am
Forum: Botany Discussion
Topic: diff. pollination mechanisms
Replies: 1
Views: 1310

Sorry to spoil your parade, but that is NOT a Collembola

... fibers are just a waxy substance secreted from their skin which helps to camouflage them. It is easy to destinguish this as an aphid as it has a siphon and is sucking from the plant and has more than 4-6 abdominal body segments. Plus if you collect some of these and look at them under a microscope ...

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by drmicrobe
Fri Feb 17, 2006 12:06 pm
Forum: Human Biology
Topic: Morgellon's or ..........flies, or .......
Replies: 173
Views: 137046

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