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The Collaborative International Dictionary of English v.0.48 (gcide)

Hippocampus \Hip`po*cam"pus\, n. [L., the sea horse, Gr. ? a
hippocampus (in senses 1 and 2); "i`ppos horse ? to bend.]
1. (Class. Myth.) A fabulous monster, with the head and fore
quarters of a horse joined to the tail of a dolphin or
other fish ({Hippocampus brevirostris}), -- seen in
Pompeian paintings, attached to the chariot of Neptune.
--Fairholt.
[1913 Webster]

2. (Zool.) A genus of lophobranch fishes of several species
in which the head and neck have some resemblance to those
of a horse; -- called also {sea horse}.
[1913 Webster]

Note: They swim slowly, in an erect position, and often cling
to seaweeds by means of the incurved prehensile tail.
The male has a ventral pouch, in which it carries the
eggs till hatched.
[1913 Webster]

3. (Zool.) A name applied to either of two ridges of white
matter in each lateral ventricle of the brain. The larger
is called hippocampus major or simply hippocampus. The
smaller, hippocampus minor, is called also {ergot} and
{calcar}.
[1913 Webster]


Calcar \Cal"car\, n. [L. calcaria lime kiln, fr. calx, calcis,
lime. See {Calx}.] (Glass manuf.)
A kind of oven, or reverberatory furnace, used for the
calcination of sand and potash, and converting them into
frit. --Ure.
[1913 Webster]


Calcar \Cal"car\, n.; L. pl. {Calcaria}. [L., a spur, as worn on
the heel, also the spur of a cock, fr. calx, calcis, the
heel.]
1. (Bot.) A hollow tube or spur at the base of a petal or
corolla.
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2. (Zool.) A slender bony process from the ankle joint of
bats, which helps to support the posterior part of the
web, in flight.
[1913 Webster]

3. (Anat.)
(a) A spur, or spurlike prominence.
(b) A curved ridge in the floor of the leteral ventricle
of the brain; the calcar avis, hippocampus minor, or
ergot.
[1913 Webster] Calcarate

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