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Definition of invertebrate
Thanks for using this online dictionary, we have been helping millions of people improve their use of the english language with its free online services. English definition of invertebrate is as below...
Invertebrate
(a.)
Destitute
of a
backbone;
having
no
vertebrae;
of or
pertaining
to the
Invertebrata.
Lern More About Invertebrate
☛ Wiki Definition of Invertebrate
☛ Wiki Article of Invertebrate
☛ Google Meaning of Invertebrate
☛ Google Search for Invertebrate
Pseudo-heart
::
Pseudo-heart
(n.) Any
contractile
vessel
of
invertebrates
which is not of the
nature
of a real
heart,
especially
one of those
pertaining
to the
excretory
system..
Hypoderma
::
Hypoderma
(n.) An inner
cellular
layer which lies
beneath
the
chitinous
cuticle
of
arthropods,
annelids,
and some other
invertebrates..
Perisome
::
Perisome
(n.) The
entire
covering
of an
invertebrate
animal,
as
echinoderm
or
coelenterate;
the
integument..
Gizzard
::
Gizzard
(n.) A thick
muscular
stomach
found in many
invertebrate
animals.
Exoskeleton
::
Exoskeleton
(n.) The
hardened
parts of the
external
integument
of an
animal,
including
hair,
feathers,
nails,
horns,
scales,
etc.,as
well as the armor of
armadillos
and many
reptiles,
and the
shells
or
hardened
integument
of
numerous
invertebrates;
external
skeleton;
dermoskeleton..
Testacea
::
Testacea
(n. pl.)
Invertebrate
animals
covered
with
shells,
especially
mollusks;
shellfish..
Retinophora
::
Retinophora
(n.) One of group of two to four
united
cells which
occupy
the axial part of the
ocelli,
or
ommatidia,
of the eyes of
invertebrates,
and
contain
the
terminal
nerve
fibrillae.
See
Illust.
under
Ommatidium..
Keratose
::
Keratose
(n.) A
tough,
horny
animal
substance
entering
into the
composition
of the
skeleton
of
sponges,
and other
invertebrates;
--
called
also
keratode..
Enteropneusta
::
Enteropneusta
(n. pl.) A group of
wormlike
invertebrates
having,
along the sides of the body,
branchial
openings
for the
branchial
sacs, which are
formed
by
diverticula
of the
alimentary
canal.
Balanoglossus
is the only known
genus.
See
Illustration
in
Appendix..
Eye
::
Eye (n.) The organ of sight or
vision.
In man, and the
vertebrates
generally,
it is
properly
the
movable
ball or globe in the
orbit,
but the term often
includes
the
adjacent
parts.
In most
invertebrates
the years are
immovable
ocelli,
or
compound
eyes made up of
numerous
ocelli.
See
Ocellus..
Vent
::
Vent (n.) The anal
opening
of
certain
invertebrates
and
fishes;
also, the
external
cloacal
opening
of
reptiles,
birds,
amphibians,
and many
fishes..
Zoophyte
::
Zoophyte
(v. i.) Any one of
numerous
species
of
invertebrate
animals
which more or less
resemble
plants
in
appearance,
or mode of
growth,
as the
corals,
gorgonians,
sea
anemones,
hydroids,
bryozoans,
sponges,
etc.,
especially
any of those that form
compound
colonies
having
a
branched
or
treelike
form, as many
corals
and
hydroids..
Scale
::
Scale (n.) One of the small
scalelike
structures
covering
parts of some
invertebrates,
as those on the wings of
Lepidoptera
and on the body of
Thysanura;
the
elytra
of
certain
annelids.
See
Lepidoptera..
Pylorus
::
Pylorus
(n.) A
posterior
division
of the
stomach
in some
invertebrates.
Tooth
::
Tooth (n.) Any hard
calcareous
or
chitinous
organ found in the mouth of
various
invertebrates
and used in
feeding
or
procuring
food; as, the teeth of a
mollusk
or a
starfish..
Shell
::
Shell (n.) The hard
calcareous
or
chitinous
external
covering
of
mollusks,
crustaceans,
and some other
invertebrates.
In some
mollusks,
as the
cuttlefishes,
it is
internal,
or
concealed
by the
mantle.
Also, the hard
covering
of some
vertebrates,
as the
armadillo,
the
tortoise,
and the
like..
Water Pore
::
Water pore () A pore by which the water tubes of
various
invertebrates
open
externally.
Otocyst
::
Otocyst
(n.) An
auditory
cyst or
vesicle;
one of the
simple
auditory
organs
of many
invertebrates,
containing
a fluid and
otoliths;
also, the
embryonic
vesicle
from which the parts of the
internal
ear of
vertebrates
are
developed..
Zoochlorella
::
Zoochlorella
(n.) One of the small green
granulelike
bodies
found in the
interior
of
certain
stentors,
hydras,
and other
invertebrates..
Uterus
::
Uterus
(n.) A
receptacle,
or
pouch,
connected
with the
oviducts
of many
invertebrates
in which the eggs are
retained
until they hatch or until the
embryos
develop
more or less. See
Illust.
of
Hermaphrodite
in
Append..
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