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also sy·phon (sī′fən)
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.]

si′phon·al, si·phon′ic adj.
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References in periodicals archive ?
Tip pointed, siphonal capsule asymmetrical, outer arm larger and inner arm smaller.
All whole whelks were weighed for total weight, measured for SL (SL; spire apex to the edge of siphonal canal), and shell width [SW; maximum straightline distance measured across the shell perpendicular to shells length (coiling) axis] to nearest 1 mm (Fig.
gigas larvae (28 days old), showing: A) Organs used to evaluate larval development; B) Areas used to measure siphonal length (LS) and to perform Calcium measurements by EDX analysis.
Shell length (apex to tip of siphonal canal) was measured with digital calipers (MaiCal 16 EWR; Mahr GmbH, Gottingen, Germany).
Primary ribs bear strong spiny umbilical tubercles, less marked inner ventrolateral tubercles and well marked clavate outer ventrolateral and siphonal tubercles.
Siphonal canal short and broad, approximately half of aperture width, left edge truncate, right edge wanting, as continuation of outer lip; left edge marked by two strong spiral folds, superior fold smooth, with sharp edge, inferior fold broad, with several arched, strong growth scales (Fig.
They were present at quite a high density (four to five per square metre) projecting by as much as 10 mm above the cobble surface "with bottle-green siphonal orifices sampling the stream water.
The only way of visually separating the shells of the two species is the presence of a patch of dark coloration near the siphonal canal of C.
Unionids move vertically and horizontally in the substrate, open and close their valves and may expel strong siphonal excurrents (e.
dark basic colony color, bright yellow around siphonal area 13.
The proboscis slips out the siphonal canal, unrolling, the barbed teeth spring forward.
Cages either excluded whelks or enclosed two or six whelks (15-22 mm in length from apex to siphonal canal), corresponding to densities of 0, 50, and 150 whelks/[m.