- The definition of a cell is a small area in a prison where criminals are kept behind bars.
An example of a cell is where a murderer is locked up.
- A cell is defined as the smallest unit of an organism with a nucleus.
An example of a cell is a unit in the tissue of an animal muscle.
A jail cell.Licensed from iStockPhoto
- a small convent or monastery attached to a larger one
- a hermit's hut
- a small room or cubicle, as in a convent or prison
- a very small hollow, cavity, or enclosed space; specif.,
- any of the compartments in a honeycomb
- a small, hollow space in tissue, esp. in bone
- the space of an insect's wings enclosed by the veins
- any compartment of an ovary; also, a pollen sac or spore sac
- any of the smallest organizational units of a group or movement, as of a Communist party
- Biol. a very small, complex unit of protoplasm, usually with a nucleus, cytoplasm, and an enclosing membrane: all plants and animals are made up of one or more cells that usually combine to form various tissues
- an open or sealed container holding electrodes and an electrolyte, used to generate electricity by chemical reactions or to decompose compounds by electrolysis
- any compartment of a storage battery
- a unit within any device, as a solar battery, that produces voltage by converting radiant energy into electrical energy
Origin: Middle English ; from Old English ; from Old French celle ; from Classical Latin cella, small room, hut (LL(Ec), monastic cell) ; from Indo-European base an unverified form kel-, to conceal from source hall, hell, hull, Gothic halja
- celled adjective
Used by arrangement with John Wiley & Sons, Inc.
- A narrow confining room, as in a prison or convent.
- A small enclosed cavity or space, such as a compartment in a honeycomb or within a plant ovary or an area bordered by veins in an insect's wing.
- Biology The smallest structural unit of an organism that is capable of independent functioning, consisting of one or more nuclei, cytoplasm, and various organelles, all surrounded by a semipermeable cell membrane.
- Architecture See web.
- The smallest organizational unit of a centralized group or movement, especially of a political party of Leninist structure.
- Electricity a. A single unit for electrolysis or conversion of chemical into electric energy, usually consisting of a container with electrodes and an electrolyte; a battery. Also called electrochemical cell.b. A single unit that converts radiant energy into electric energy: a solar cell.
- A fuel cell.
- Computer Science A basic unit of storage in a computer memory that can hold one unit of information, such as a character or word.
- A geographic area or zone surrounding a transmitter in a cellular telephone system.
- A storm cell.
- A small humble abode, such as a hermit's cave or hut.
- A small religious house dependent on a larger one, such as a priory within an abbey.
- A box or other unit on a spreadsheet or similar array at the intersection of a column and a row.
Origin: Middle English celle, from Old English cell and from Old French, both from Latin cella, chamber; see kel-1 in Indo-European roots.
top: plant cell
bottom: animal cell
cell - Computer Definition
- In asynchronous transfer mode (ATM) and Switched Multimegabit Data Service (SMDS) networks, a small protocol data unit (PDU) comprising 53 octets.The ATM cell consists of a header of 5 octets and payload of 48 octets.The small cell size offers the advantage of effectively supporting any type of data, including voice, fax, text, image, video, and multimedia, whether compressed or uncompressed and whether real-time or non-real-time. The fixed cell size offers the advantage of predictability, unlike the variable-length frames associated with services such as X.25, frame relay, and Ethernet, or the variablelength packets associated with the Internet Protocol (IP).This level of predictability yields much improved access control and congestion control. See also ATM, compression, Ethernet, frame relay, header, IP, non-real-time, packet, payload, PDU, real-time, SMDS, and X.25.
- In radio systems, a relatively small geographical area of coverage determined by factors such as frequency band, power level, and line of sight (LOS).The formal concept of radio cells dates back to 1947, when Bell Telephone engineers developed a radio system concept that included numerous, low-power transmit/receive antennas positioned throughout a metropolitan area. This sort of architecture served to increase the effective subscriber capacity of radio systems by breaking the area of coverage into cells, or smaller areas of coverage. Thereby, each frequency band could be reused in nonadjacent cells. Additionally, the cells can be split, or subdivided, further as the traffic demands of the system increase. In the context of radio telephony, including cellular telephony, cells can be characterized as falling into three broad descriptive categories, as illustrated in Figure C-2.
Used by arrangement with John Wiley & Sons, Inc.
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cell - Cultural Definition
A region of the atmosphere in which air tends to circulate without flowing outward.
cell - Medical Definition
- The smallest structural unit of an organism that is capable of independent functioning, consisting of one or more nuclei, cytoplasm, and various organelles, all surrounded by a semipermeable cell membrane.
- A small enclosed cavity or space.
human cell sectioned for electron microscopy
cell - Science Definition
- The basic unit of living matter in all organisms, consisting of protoplasm enclosed within a cell membrane. All cells except bacterial cells have a distinct nucleus that contains the cell's DNA as well as other structures (called organelles) that include mitochondria, the endoplasmic reticulum, and vacuoles. The main source of energy for all of a cell's biological processes is ATP. See more at eukaryote, prokaryote.
- Any of various devices, or units within such devices, that are capable of converting some form of energy into electricity. Cells contain two electrodes and an electrolyte. See more at electrolytic cell, solar cell, voltaic cell.
- cellular cellular adjective
top: animal cell;
bottom: plant cell
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