si·phon also sy·phon (sīfən)
1. A tube that carries a liquid from a higher level up and over a barrier and then down to a lower level, with the flow maintained by gravity and atmospheric pressure as long as the tube remains filled.
2. Zoology A tubular organ, especially of aquatic invertebrates such as squids or clams, by which water is taken in or expelled.
v. si·phoned, si·phon·ing, si·phons also sy·phoned or sy·phon·ing or sy·phons
1. To draw off or convey (a liquid) through a siphon.
2. To take or transfer (something), often illicitly: siphon money from an account; siphon customers from a competitor.
To pass through a siphon.
[Middle English, from Latin sīphō, sīphōn-, from Greek sīphōn.]
siphon·al, si·phonic adj.
(click for a larger image)siphon
The American Heritage® Dictionary of the English Language, Fifth Edition copyright ©2018 by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
Indo-European & Semitic Roots Appendices
Thousands of entries in the dictionary include etymologies that trace their origins back to reconstructed proto-languages. You can obtain more information about these forms in our online appendices:
The Indo-European appendix covers nearly half of the Indo-European roots that have left their mark on English words. A more complete treatment of Indo-European roots and the English words derived from them is available in our Dictionary of Indo-European Roots.