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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 ?
Many caenogastropods develop notches or even siphonal canals in this position of the whorl indicating the position of the inhalant stream.
The shell length is measured from the apex of the shell spire to the anterior (abapical) extremity, typically the siphonal canal (Fig.
Siphonal green algae possess a blade abandonment strategy linked to rapid proliferation processes, allowing these algae to dominate standing stocks in most calm-water reef habitats in the Caribbean (Littler & Littler, 1999).
Tip pointed, siphonal capsule asymmetrical, outer arm larger and inner arm smaller.
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.
Potamilus amphichaenus have a noticeable opening exposing tissue towards the anterior end of the shell (pedal gape), which is oriented downward into the substrate and another posteriorly (siphonal gape) which projects upwards into the column of water (Howells et al., 1996).
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.g., O'Riordan et al., 1995; Amyot and Downing, 1997; Kadar et al., 2001; Markich, 2003; Schwalb and Pusch, 2007).