Cell theory
Cellular Cel"lu*lar (s[e^]l"[u^]*l[~e]r; 135), a. [L. cellula a little cell: cf. F. cellulaire. See {Cellule}.] 1. Consisting of, or containing, cells; of or pertaining to a cell or cells. [1913 Webster]

2. porous; containing cavities. [PJC]

3. pertaining to or using a system of transmission of telephone signals by radio, in which areas are divided into geographical parts (cells), each of which is served by a transmitter whose range is limited to that region, thus permitting a single transmission frequency to be used simulataneously in different parts of the same area. Cellular telephones are typically small and battery powered, allowing a subscriber with such a telephone to carry the telephone in a pocket or purse, over the entire area served, and to be contacted by a single telephone number. The system became widespread and popular in the 1980's and 1990's; as, cellular telephones sometimes lose their link unpredictably. [PJC]

{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 and animals, are to be considered as a mass of minute cells communicating with each other.

{Cellular tissue}. (a) (Anat.) See {conjunctive tissue} under {Conjunctive}. (b) (Bot.) Tissue composed entirely of parenchyma, and having no woody fiber or ducts. [1913 Webster]


The Collaborative International Dictionary of English. 2000.

Look at other dictionaries:

  • Cell theory — refers to the idea that cells are the basic unit of structure in every living thing. Development of this theory during the Mid 1600s was made possible by advances in microscopy. This theory is one of the foundations of biology. The theory says… …   Wikipedia

  • Cell theory — Cell 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. [1913 Webster] The heroic confessor in …   The Collaborative International Dictionary of English

  • cell theory — n a theory in biology that includes one or both of the statements that the cell is the fundamental structural and functional unit of living matter and that the organism is composed of autonomous cells with its properties being the sum of those of …   Medical dictionary

  • cell theory — cell theory. См. клеточная теория. (Источник: «Англо русский толковый словарь генетических терминов». Арефьев В.А., Лисовенко Л.А., Москва: Изд во ВНИРО, 1995 г.) …   Молекулярная биология и генетика. Толковый словарь.

  • cell theory — noun (biology) the theory that cells form the fundamental structural and functional units of all living organisms; proposed in 1838 by Matthias Schleiden and by Theodor Schwann • Syn: ↑cell doctrine • Topics: ↑biology, ↑biological science •… …   Useful english dictionary

  • cell theory — ląstelinė teorija statusas T sritis augalininkystė apibrėžtis Biologijos teorija, pagal kurią visi organizmai yra sudaryti iš ląstelių. atitikmenys: angl. cell theory rus. клеточная теория …   Žemės ūkio augalų selekcijos ir sėklininkystės terminų žodynas

  • cell theory — cell′ the ory n. (lab cbl) bio the tenet in biology that cells are the basic units of structure and function in living organisms • Etymology: 1885–90 …   From formal English to slang

  • cell theory — noun Date: 1859 a theory in biology that includes one or both of the statements that the cell is the fundamental structural and functional unit of living matter and that the organism is composed of autonomous cells with its properties being the… …   New Collegiate Dictionary

  • cell theory — All organisms are composed of cell(s); a cell is the smallest unit of matter that is alive (functional unit) proposed by Schwann for animals in 1838 40; cells are the reproductive units of all organisms; cellular …   Dictionary of invertebrate zoology

  • cell theory — noun the theory that all living organisms are made of cells as the smallest functional unit …   Wiktionary

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