node

(nōd)

1. A knob, knot, protuberance, or swelling.
2. 1. Botany. The point on a stem where a leaf is attached or has been attached; a joint.
   2. See knot¹ (sense 7).
3. Physics. A point or region of virtually zero amplitude in a periodic system.
4. Mathematics. The point at which a continuous curve crosses itself.
5. Computer Science. A terminal in a computer network.
6. Astronomy.
   1. Either of two diametrically opposite points at which the orbit of a planet intersects the ecliptic.
   2. Either of two points at which the orbit of a satellite intersects the orbital plane of a planet.

[Middle English, lump in the flesh, from Latin nōdus, knot.]

View more Technology videos

(1) In a communications system, a node is a network junction or connection point. Every terminal, computer, hub and switch is a node.

(2) In database management, a node is an item of data that can be accessed by two or more routes.

(3) In the Document Object Model (DOM), which exposes HTML and XML content to an application or script, every element, every attribute of that element, and each piece of textual content for every attribute is considered a node. See DOM.

(4) In computer graphics, a node is an endpoint of a graphical element.

(5) In multiprocessing systems, a node can be a single processor or system. In MPP, it is one processor. In SMP, it is one computer system with two or more processors and shared memory.

The First Four Nodes of the Internet

Download Computer Desktop Encyclopedia to your PC, iPhone or Android.

1. In electric wiring, a junction point at which several distribution or wiring conductors come together.
2. A panel point.

A swelling or protuberance.

(DOD) A location in a mobility system where a movement requirement is originated, processed for onward movement, or terminated.

A place on a stem where leaves or branches are attached. See also internode.

1. a knob, lump, or swelling; a constriction, especially when serially repeated (along the length of something).
2. (in botany) the point on a stem to which a leaf or a lateral branch is attached.
3. (in physics) a point of zero or minimum displacement in a standing wave or a system of such waves. See also node of Ranvier.

Pl. nodi; a small mass of tissue in the form of a swelling, knot or protuberance, either normal or pathological.

• n. of Aschoff and Tawara — atrioventricular node.
• cutaneous n. — an elevated, solid lump, without a necrotic center, about 0.5 inch diameter, caused by acute or chronic inflammation, with an unbroken surface. Called also cutaneous nodule.
• Flack's n. — see sinoatrial node.
• hemal n's — see hemal node.
• Keith's n., Keith–Flack n. — see sinoatrial node.
• lymph n. — see lymph node.
• n's of Ranvier — constrictions of myelinated nerve fibers at regular intervals of about 1 mm at which the myelin sheath is absent and theaxon is enclosed only by Schwann cell processes.
• sinoatrial (S-A) n. — see sinoatrial node.
• n. of Tawara — atrioventricular node.

A swelling or protuberance.

• Principles of Mechanics, Waves, and Measurement - node: point in medium or field that remains undisturbed when acted upon simultaneously by more than one disturbance
• Electricity and Electronics - node: network or circuit junction
• Data Transmission - node: one individual site on a network, as for a computer or printer
• Fixed Positions and Points - node: point at which parts begin or focus; point at which curve crosses itself at different tangents

Look up node in Wiktionary, the free dictionary.

In general, a node is a localised swelling (a "knot") or a point of intersection (a vertex).

Contents 1 In mathematics 2 In computing and electronics 3 In science 4 Other uses 5 See also

Node may refer to:

In mathematics

• Node (autonomous system), behaviour for an ordinary differential equation near a critical point
• Node (graph theory), a vertex in a mathematical graph
• A type of singular point of a curve.

In computing and electronics

• Node (circuits), a region in an electrical circuit where there is no change in potential
• Node (computer science), the computer representation of a node in a graph, and a basic unit used to build data structures such as linked lists and trees
• Node (networking), an active device attached to a computer network or other telecommunications network, such as a computer or a switch, or a point in a network topology at which lines intersect or branch
• Node (UML), the representation of a computational device in the Unified Modeling Language
• Node.js, a javascript-based programming framework

In science

• Biology
  • Primitive node is the organizer tissue for gastrulation in vertebrates.
  • Node (botany), the place on a plant stem where a leaf is attached
  • In Cladistics, a shared ancestor (also see Clade)
• Astronomy
  • Orbital node, the points where an orbit crosses a plane of reference (often divided into ascending and descending)
    • Lunar node, where the orbits of the sun and moon intersect
    • Longitude of the node, how orbital nodes are parameterised
• Physics
  • Node (physics), a point along a standing wave where the wave has minimal amplitude
• Linguistics
  • Node (linguistics), a branch point in the Tree model, or Node Theory, of language evolution

Other uses

• Node, a stop in a transportation system
• Node Magazine, a literary project based on the novel Spook Country by William Gibson
• Node, a cyborg with a donated human face that is used as a guide in the universe's largest library, in "Silence in the Library" (Doctor Who)
• Node, the pommel-like part of a Chalice where the stem meets the cup, and is used to make elevation easier.

See also

• Nodule (disambiguation)
• Nodal (disambiguation)

This disambiguation page lists articles associated with the same title. If an internal link led you here, you may wish to change the link to point directly to the intended article.

This entry is from Wikipedia, the leading user-contributed encyclopedia. It may not have been reviewed by professional editors (see full disclaimer)

Dansk (Danish)
n. - knude, (zool) knæ, led, bladfæste

Nederlands (Dutch)
knooppunt, knobbel, knoest, ingewikkelde situatie, punt van minste storing (golf), punt zonder stroom/voltage (elektronica)

Français (French)
n. - (Astron, Ling, Bot, Phys, Math) n¯ud, (Méd) nodosité

Deutsch (German)
n. - Knoten, Ganglienknoten, Schwingungsknoten

Ελληνική (Greek)
n. - κόμβος, κόνδυλος, όζος (μίσχου), ρόζος, (αστρον.) δεσμός, (Η/Υ) στοιχείο δικτύου

Italiano (Italian)
nodo

Português (Portuguese)
n. - nó (m), tumor (m) (Patol.), nodo (m) (Anat.)

Русский (Russian)
узел

Español (Spanish)
n. - nodo, nudo

Svenska (Swedish)
n. - knut(a), knöl, nod

中文（简体）(Chinese (Simplified))
结, 瘤, 节, 茎节

中文（繁體）(Chinese (Traditional))
n. - 結, 瘤, 節, 莖節

한국어 (Korean)
n. - 복잡한 조직의 중심점, 매듭

日本語 (Japanese)
n. - こぶ, 節, 交点, 節点, 中核

العربيه (Arabic)
‏(الاسم) قطب, طرف, نهايه‏

עברית (Hebrew)
n. - ‮בליטה, קשר, מפרק (בצמח), חור בעטיפה השומנית של עצב, גוף קטן של רקמה שונה בגוף, למשל בלוטה, נקודה בה חוצה מסלול כוכב-לכת את מסלול השמש, נקודה של הפרעה מזערית במערכת גלים, נקודה של אפס זרם או מתח חשמלי, נקודה בה קו חוצה את עצמו, נקודת השיא של עקומה, רכיב ברשת מחשבים‬

If you are unable to view some languages clearly, click here.

To select your translation preferences click here.