Definition of siphuncle. Meaning of siphuncle. Synonyms of siphuncle
Here you will find one or more explanations in English for the word siphuncle. Also in the bottom left of the page several parts of wikipedia pages related to the word siphuncle and, of course, siphuncle synonyms and on the right images related to the word siphuncle.
Definition of siphuncle
siphuncleSiphon Si"phon, n. [F. siphon, L. sipho, -onis, fr. Gr. ??? a
siphon, tube, pipe.]
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.
(a) 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. See Illust. under
Mya, and Lamellibranchiata.
(b) The anterior prolongation of the margin of any
gastropod shell for the protection of the soft siphon.
(c) 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. See Illust. under
Loligo, and Dibranchiata.
(d) The siphuncle of a cephalopod shell.
(e) The sucking proboscis of certain parasitic insects and
(f) A sproutlike prolongation in front of the mouth of
(g) A tubular organ connected both with the esophagus and
the intestine of certain sea urchins and annelids.
3. A siphon bottle.
Inverted siphon, a tube bent like a siphon, but having the
branches turned upward; specifically (Hydraulic
Engineering), a pipe for conducting water beneath a
depressed place, as from one hill to another across an
intervening valley, following the depression of the
Siphon barometer. See under Barometer.
Siphon bottle, a bottle for holding a["e]rated water, which
is driven out through a bent tube in the neck by the gas
within the bottle when a valve in the tube is opened; --
called also gazogene, and siphoid. SiphuncleSiphuncle Si"phun`cle, n. [L. siphunculus, sipunculus, dim. of
sipho. See Siphon.] (Zo["o]l.)
The tube which runs through the partitions of chambered
Meaning of siphuncle from wikipedia
- The siphuncle
is a strand
p****ing longitudinally through
the s**** of a cephalopod
mollusk. Only cephalopods
s**** have siphuncles...
had ventral siphuncles
like ammonites, although often proportionally larger
and more internally
structured. The word "siphuncle
from the New...
- sections, straight
sutures, and a tubular, generally central siphuncle
. Having survived relatively unchanged
of years, nautiluses...
- internal organs
so the **** lies above
the head. = Septa
Volbort****a, some fossils
of which predate
530 million years
- body chamber transversely
constricted, and a subcentral orthochoanitic siphuncle
. The surface
by a network
of fine lirae
- The absence
of this siphuncle
has been taken
as evidence against cephalopod ancestry
– how, it is argued, could
a siphuncle evolve
by the siphuncle
each of the internal chambers
of the s****. Surrounding
tube of the siphuncle
- Devonian. Discosorids
in the structure
of the siphuncle
, the tube that runs through
(chambers) in cephalopods...
- of cephalopods
from the Lower Paleozoic
with cone-like deposits
in its siphuncle
. Endocerida comprises
a diverse group
in close contact
as with the Tarphyceratidae, but in which
in structure, becomes
dorsal. The Trocholitidae
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