The world of SEO and Internet Marketing has gained considerable popularity in the last few years, and has its own language and dictionary of terms. We have compiled a list of some of the most used words in Search Engine Optimization and other Internet related terms to help you.
Select a letter to see the terms starting with this letter.
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Term and Description |
| 1. | L8Rlater, as in "See you later", an expression often used in e mail or Usenet groups as a closing remark. |
| 2. | LANLocal Area Network. A group of computers and other devices dispersed over a relatively limited area and connected by a communications link that enables any device to interact with any other on the network. LANs commonly include PCs and shared resources such as laser printers and large hard disks. The devices on a LAN are known as nodes, and the nodes are connected by cables through which messages are transmitted. |
| 3. | LAN ManagerAn older LAN (local area network) technology developed by Microsoft and distributed by Microsoft, IBM (as IBM LAN Server), and other original equipment manufacturers. Superseded by TCP/IP networking protocols in Windows 9x, LAN Manager implemented the NetBEUI protocol and was notable for its small stack size. It was used to connect computers running the MS-DOS, OS/2, or UNIX operating systems to allow users to share files and system resources and to run distributed applications using a client/server architecture. |
| 4. | LANELAN Emulation. |
| 5. | last in, first outA method of processing a queue in which items are removed in inverse order relative to the order in which they were addedóthat is, the last in is the first out. |
| 6. | Last MileThe connection (which may in fact be more or less than one mile) between an end user's system and that of a service provider, such as a telephone company. The "last mile" connection historically has referred to the twisted-pair copper wires used between a home and the telephone company. While this definition remains accurate, "last mile" is now often used more broadly to refer to the link between an end user's system and the high-speed Internet access technology of a service provider, such as an ISP (Internet service provider). Thus, for modem users accessing the Internet through voice-grade lines, the last mile is still equivalent to the phone company's twisted-pair copper wiring. However, because standard modem transmission over voice-grade lines is sometimes frustratingly slow, other last mile solutions have been designed to provide greater speed and bandwidth. These include coaxial cable (used in cable TV), fiber optics, or a radio link (such as a cellular telephone or a point-to-point link). DSL and ISDN are methods for providing high-speed last-mile data service through twisted-pair copper wires. |
| 7. | LatencyThe time required for a signal to travel from one point on a network to another. |
| 8. | lcdIn some FTP clients, the command that changes the current directory on the local system. |
| 9. | LDAPLightweight Directory Access Protocol. |
| 10. | Leapfrog AttackA method used by hackers to make an attack difficult to trace back to the source. In a leapfrog attack the hacker uses a User ID stolen from another source or routes information through a series of hosts to hide their identity and obscure the origin of the attack. |
| 11. | letterbombAn e-mail message that is intended to impair the recipient's computer use. Some sequences of control characters can lock up a terminal, files attached to the message may contain viruses or Trojan horses, and a sufficiently large message can overflow a mailbox or crash a system. |
| 12. | LIFOLast in, first out. |
| 13. | Lightweight Directory Access ProtocolA network protocol designed to work on TCP/IP stacks to extract information from a hierarchical directory such as X.500. This gives users a single tool to comb through data to find a particular piece of information, such as a user name, an e-mail address, a security certificate, or other contact information. |
| 14. | Lightweight Internet Person SchemaIn Lightweight Directory Access Protocol directories, a specification for the retrieval of such information as names and e-mail addresses. |
| 15. | Line1. Any wire or wires, such as power lines and telephone lines, used to transmit electrical power or signals. 2. In communications, a connection, usually a physical wire or other cable, between sending and receiving (or calling and called) devices, including telephones, computers, and terminals. 3. In a SONET network, a segment that runs between two multiplexers. |
| 16. | Line1. Any wire or wires, such as power lines and telephone lines, used to transmit electrical power or signals. 2. In communications, a connection, usually a physical wire or other cable, between sending and receiving (or calling and called) devices, including telephones, computers, and terminals. 3. In a SONET network, a segment that runs between two multiplexers. |
| 17. | Line AdapterA device, such as a modem or network card, that connects a computer to a communications line and converts a signal to an acceptable form for transmission. |
| 18. | Line AnalyzerA monitoring device used to verify the integrity of a communications line and to assist in troubleshooting. |
| 19. | Line-based BrowserA Web browser whose display is based on text rather than graphics. A popular line-based browser is Lynx. |
| 20. | LinkSee "Hyperlink". |
| 21. | Link AggregationA technique for combining two or more Ethernet connections into one logical link, or trunk, between two devices. It is used to increase the bandwidth capacity of connections and to make these connections more resilient. The IEEE 802.3ad specification standardizes this process among different vendors using the Link Aggregation Control Protocol (LACP). Also called: bonding, trunking. |
| 22. | Linked StylesheetA stylesheet existing separately from the HTML documents to which it is linked. A linked stylesheet may be used for sets of Web pages or entire Web sites requiring a uniform appearance. Since the style is defined once and linked to associated Web pages, the entire site can be changed by modifying a single stylesheet file. |
| 23. | LinkrotA condition affecting inadequately maintained Web pages that results in outdated, inoperative links to other Web pages. |
| 24. | LinuxA version of the UNIX System V Release 3.0 kernel developed for PCs with 80386 and higher-level microprocessors. Developed by Linus Torvalds (for whom it is named) along with numerous collaborators worldwide, Linux is distributed free, and its source code is open to modification by anyone who chooses to work on it, although some companies distribute it as part of a commercial package with Linux-compatible utilities. The Linux kernel (or core of the operating system) works with the GNU utilities developed by the Free Software Foundation, which did not produce a kernel. It is used by some as an operating system for network servers and in the 1998/1999 timeframe began to gain increased visibility through support from vendors such as IBM and Compaq. |
| 25. | Lion WormA UNIX shellscript worm first detected in early 2001 that infects Linux servers using Berkeley Internet Name Domain (BIND) tools. After it has used a BIND exploit to infect a machine, Lion steals password files and other critical information and transmits them to the hacker. Lion then installs hacking tools and replaces critical files, hiding itself and opening multiple back doors for further compromise. The Lion worm was apparently launched in early 2001 by a group of Chinese hackers with a specific political agenda. In references to this worm, "Lion" may also be spelled as "1i0n". |
| 26. | LIPSLightweight Internet Person Schema. |
| 27. | LISTSERVOne of the most popular commercial mailing list managers, marketed by L-SOFT International in versions for BITNET, UNIX, and Windows. |
| 28. | LiveUsed to identify a Web site that has been published to a Web server and can be browsed by site visitors. |
| 29. | Live3DA Netscape proprietary Virtual Reality Modeling Language (VRML) plug-in for Web browsers that allows users to view and interact with a virtual-reality world. |
| 30. | Lmhosts fileA local text file that lists the names of network hosts (sometimes called NetBIOS names) to IP addresses for hosts that are not located on the local subnet. |
| 31. | Local Area NetworkSee "LAN". |
| 32. | Local LoopThe (end) portion of a telephone connection that runs from the subscriber to the local telephone exchange. |
| 33. | Local NewsgroupsNewsgroups that are targeted toward a geographically limited area such as a city or educational institution. Posts to these newsgroups contain information that is specific to the area, concerning such topics as events, meetings, and sales. |
| 34. | Local User ProfileA user profile that is created automatically on the computer the first time a user logs on to a computer. |
| 35. | localhostThe name that is used to represent the same computer on which a TCP/IP message originates. An IP packet sent to localhost has the IP address 127.0.0.1 and does not actually go out to the Internet. |
| 36. | LocalTalkAn inexpensive cabling scheme used by AppleTalk networks to connect Apple Macintosh computers, printers, and other peripheral devices. |
| 37. | Location-based ServiceA service provided to a wireless mobile device based on the device's location. Location-based services can range from simple services, such as listing nearby restaurants, to more complex features, such as connecting to the Internet to monitor traffic conditions and find the least congested route to a destination. |
| 38. | LockoutThe act of denying access to a given resource, usually to ensure that only one program at a time uses that resource. |
| 39. | log offTo terminate a session with a computer accessed through a communications line, usually a computer that is both distant and open to many users. |
| 40. | log onTo gain access to a specific computer, a program, or a network by identifying oneself with a username and a password. |
| 41. | log outSee "log off". |
| 42. | Logic BombA type of Trojan horse that executes when certain conditions are met, such as when a user performs a specific action. |
| 43. | logoffThe process of terminating a session with a computer accessed through a communications line. |
| 44. | logonThe process of identifying oneself to a computer after connecting to it over a communications line. |
| 45. | Logon ScriptA file assigned to certain user accounts on a network system. A logon script runs automatically every time the user logs on. It can be used to configure a user's working environment at every logon, and it allows an administrator to influence a user's environment without managing all aspects of it. A logon script can be assigned to one or more user accounts. |
| 46. | logoutSee "logoff". |
| 47. | LOLLaughing Out Loud. An interjection used in e-mail, online forums, and chat services to express appreciation of a joke or other humorous occurrence. |
| 48. | long-haulOf, pertaining to, or being a type of modem that is able to transmit over long distances. |
| 49. | Lotus DominoA groupware application that transforms Lotus Notes into an application and messaging server. |
| 50. | Lotus NotesA groupware application introduced in 1988 by Lotus Development Corporation and now owned by IBM. Lotus Notes combines e-mail, calendar management, group scheduling, contact and task management, newsgroup access, and Web browsing capability (through the integration of Microsoft Internet Explorer) in one client application. Lotus Notes also offers search capabilities across multiple formats and file types on a network or the Web. |
| 51. | LULogical Unit. |
| 52. | LurkTo receive and read articles or messages in a newsgroup or other online conference without contributing to the ongoing exchange. |
| 53. | LurkerA person who lurks in a newsgroup or other online conference. |
| 54. | LycosA Web search engine and directory that provides summaries of pages matching search requests. In addition, the Lycos site offers categorized directories of sites, reviews of selected sites, and services for finding names, viewing maps, and so on. |
| 55. | LynxA text-only Web browser program for UNIX platforms. |
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