a tube or conduit bent into legs of unequal length, for use in drawing a liquid from one container into another on a lower level by placing the shorter leg into the container above and the longer leg into the one below, the liquid being forced up the shorter leg and into the longer one by the pressure of the atmosphere.
a projecting tubular part of some animals, especially certain mollusks, through which liquid enters or leaves the body.
to convey, draw, or pass through or as if through a siphon (sometimes followed by off): to siphon water; to siphon off profits into a secret bank account.
- si·phon·al, si·phon·ic [sahy-fon-ik], /saɪˈfɒn ɪk/, adjective
- si·phon·less, adjective
- si·phon·like, adjective
- pseu·do·si·phon·al, adjective
- pseu·do·si·phon·ic, adjective
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
How to use siphon in a sentence
Like many mosquito larvae, they often dangle head down in the water, taking in oxygen through a flexible siphon.Video captures young mosquitoes launching their heads to eat other mosquitoes | Susan Milius | October 4, 2022 | Science News
After training, his lab witnessed new synaptic growth between the sensory neuron that felt touch and the motor neuron that triggered the siphon withdrawal reflex.Memories Can Be Injected and Survive Amputation and Metamorphosis - Facts So Romantic | Marco Altamirano | October 20, 2020 | Nautilus
First, they allow Paul to siphon off attention from whichever potential candidate is making news.
What are the economic factors in play when you siphon off access to the coasts?Life After ‘Winter’s Bone’: Debra Granik on Finding J. Law and the Plight of the Female Director | Marlow Stern | October 24, 2014 | THE DAILY BEAST
How sick do you have to be to siphon money away from an event for the needy?12-12-12 Concert Ticket Scalpers: The Hurricane Sandy Benefit Spoilers | Winston Ross | December 13, 2012 | THE DAILY BEAST
“In order to save the day, I had to siphon gasoline out of a car, which involved me sucking it out of a tube,” said Donahue.Growgirl: Heather Donahue’s Journey From ‘Blair Witch’ to Growing Marijuana | Marlow Stern | January 6, 2012 | THE DAILY BEAST
By the end of 1983, Wilson had managed to siphon $300 million of unused Pentagon cash to the Afghan mujahideen.
The homemade siphon shown in the sketch consists of two rubber corks and a glass tube with a rubber hose connected to it.The Boy Mechanic, Book 2 | Various
He was back again in a trice, a flask in one hand, a soda siphon in the other, and a small glass balanced on his thumb.Red Pepper Burns | Grace S. Richmond
So saying he dispensed whisky and cigarettes, there being a siphon and glasses, and three matches in a match-stand, on the table.The Regent | E. Arnold Bennett
Now, are we going to discuss this thing rationally, or do you want to hit me with a heavy siphon?The Terms of Surrender | Louis Tracy
Sir William Thomson's siphon recorder, in all its present completeness, must take rank as a masterpiece of invention.Heroes of the Telegraph | J. Munro
British Dictionary definitions for siphon
a tube placed with one end at a certain level in a vessel of liquid and the other end outside the vessel below this level, so that liquid pressure forces the liquid through the tube and out of the vessel by gravity
See soda siphon
zoology any of various tubular organs in different aquatic animals, such as molluscs and elasmobranch fishes, through which a fluid, esp water, passes
(often foll by off) to pass or draw off through or as if through a siphon
- siphonage, noun
- siphonal or siphonic (saɪˈfɒnɪk), adjective
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
Scientific definitions for siphon
A pipe or tube in the form of an upside-down U, filled with liquid and arranged so that the pressure of the atmosphere forces liquid to flow upward from a container through the tube, over a barrier, and into a lower container.
A tubular animal part, as of a clam, through which water is taken in or expelled.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.