Definition of Cell theory. Meaning of Cell theory. Synonyms of Cell theory
Here you will find one or more explanations in English for the word Cell theory.
Also in the bottom left of the page several parts of wikipedia pages related to the word Cell theory and, of course, Cell theory synonyms and on the right images related to the word Cell theory.
Definition of Cell theory
Cell theoryCell Cell, n. [OF. celle, fr. L. cella; akin to celare to
hide, and E. hell, helm, conceal. Cf. Hall.]
1. A very small and close apartment, as in a prison or in a
monastery or convent; the hut of a hermit.
The heroic confessor in his cell. --Macaulay.
2. A small religious house attached to a monastery or
convent. ``Cells or dependent priories.' --Milman.
3. Any small cavity, or hollow place.
(a) The space between the ribs of a vaulted roof.
(b) Same as Cella.
5. (Elec.) A jar of vessel, or a division of a compound
vessel, for holding the exciting fluid of a battery.
6. (Biol.) One of the minute elementary structures, of which
the greater part of the various tissues and organs of
animals and plants are composed.
Note: All cells have their origin in the primary cell from
which the organism was developed. In the lowest animal
and vegetable forms, one single cell constitutes the
complete individual, such being called unicelluter
orgamisms. A typical cell is composed of a semifluid
mass of protoplasm, more or less granular, generally
containing in its center a nucleus which in turn
frequently contains one or more nucleoli, the whole
being surrounded by a thin membrane, the cell wall. In
some cells, as in those of blood, in the am[oe]ba, and
in embryonic cells (both vegetable and animal), there
is no restricting cell wall, while in some of the
unicelluliar organisms the nucleus is wholly wanting.
See Illust. of Bipolar.
Air cell. See Air cell.
Cell development (called also cell genesis, cell
formation, and cytogenesis), the multiplication, of
cells by a process of reproduction under the following
common forms; segmentation or fission, gemmation or
budding, karyokinesis, and endogenous multiplication. See
Segmentation, Gemmation, etc.
Cell theory. (Biol.) See Cellular theory, under
Cellular. Cell theoryCellular Cel"lu*lar, a. [L. cellula a little cell: cf. F.
cellulaire. See Cellule.]
Consisting of, or containing, cells; of or pertaining to a
cell or cells.
Cellular plants, Cellular cryptogams (Bot.), those
flowerless plants which have no ducts or fiber in their
tissue, as mosses, fungi, lichens, and alg[ae].
Cellular theory, or Cell theory (Biol.), a theory,
according to which the essential element of every tissue,
either vegetable or animal, is a cell; the whole series of
cells having been formed from the development of the germ
cell and by differentiation converted into tissues and
organs which, both in plants ans animals, are to be
considered as a mass of minute cells communicating with
(a) (Anat.) See conjunctive tissue under Conjunctive.
(b) (Bot.) Tissue composed entirely of parenchyma, and having
no woody fiber or ducts.
Meaning of Cell theory from wikipedia
- In biology, cell theory
is a scientific theory first formulated
in the mid-nineteenth century, that living organisms
are made up of cells
, that they are...
- Tom Clancy's Splinter Cell
: Chaos Theory
is a stealth
by Ubisoft Montreal
and Ubisoft Milan
2005 for the Xbox, PlayStation...
- Cell theory
has its origins
in seventeenth century microscopy
observations, but it was nearly
two hundred years before
a complete cell membrane
- The theory
of solar cells explains
by which light energy
into electric current
when the photons strike
- Cell theory
, first developed
in 1839 by Matthias Jakob Schleiden
that all organisms
of one or more cells
- pathology, introduced
the third dictum
in cell theory
: Omnis cellula
come from cells
"). He was a co-founder of Physikalisch-Medizinische...
to be the extension
of cell theory
to animals. Other contributions include
of Schwann cells
in the peripheral nervous
- the Cell Theory, Hooke misled
the cell membrane theory
that all cells contained
a hard cell
only plant cells could
at the time. Microscopists...
- A cell
wall is a structural layer surrounding
, just outside
membrane. It can be tough, flexible, and sometimes
rigid. It provides...
- The stem cell theory
of aging postulates
that the aging process
is the result
of the inability
of various types
of stem cells
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