infusoria
n . 滴虫类[原生动物]
滴虫类[原生动物]
Infusoria n 1 :
in some recent classifications ,
coextensive with the Ciliata :
minute organisms found in decomposing infusions of organic matter [
synonym : {
Infusoria }, {
subclass Infusoria }]
Infusoria \
In `
fu *
so "
ri *
a \,
n .
pl . [
NL .; --
so called because found in infusions which are left exposed to the air for a time .
See {
Infuse }.] (
Zool .)
One of the classes of Protozoa ,
including a large number of species ,
all of minute size .
Formerly ,
the term was applied to any microbe found in infusions of decaying organic material ,
but the term is now applied more specifically to one of the classes of the phylum Ciliophora ,
of ciliated protozoans .
[
1913 Webster PJC ]
Note : (
From 1913 dictionary ):
They are found in all seas ,
lakes ,
ponds ,
and streams ,
as well as in infusions of organic matter exposed to the air .
They are distinguished by having vibrating lashes or cilia ,
with which they obtain their food and swim about .
They are devided into the orders {
Flagellata }, {
Ciliata },
and {
Tentaculifera }.
See these words in the Vocabulary .
Formely the term Infusoria was applied to all microscopic organisms found in water ,
including many minute plants ,
belonging to the diatoms ,
as well as minute animals belonging to various classes ,
as the Rotifera ,
which are worms ;
and the Rhizopoda ,
which constitute a distinct class of Protozoa .
Fossil Infusoria are mostly the siliceous shells of diatoms ;
sometimes they are siliceous skeletons of Radiolaria ,
or the calcareous shells of Foraminifera .
[
1913 Webster ]
{
Molluscoidea },
including Brachiopoda and Bryozoa . {
Mollusca },
including Cephalopoda ,
Gastropoda ,
Pteropoda ,
Scaphopoda ,
Lamellibranchiata or Acephala . {
Echinodermata },
including Holothurioidea ,
Echinoidea ,
Asterioidea ,
Ophiuroidea ,
and Crinoidea . {
C [
oe ]
lenterata },
including {
Anthozoa }
or {
Polyps },
{
Ctenophora },
and {
Hydrozoa }
or Acalephs . {
Spongiozoa }
or {
Porifera },
including the sponges .
{
Protozoa },
including {
Infusoria }
and {
Rhizopoda }.
For definitions ,
see these names in the Vocabulary .
[
1913 Webster ]
Animalcular
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