noun, verb, logged, log⋅ging.| 1. | a portion or length of the trunk or of a large limb of a felled tree. |
| 2. | something inert, heavy, or not sentient. |
| 3. | Nautical. any of various devices for determining the speed of a ship, as a chip log or patent log. |
| 4. | any of various records, made in rough or finished form, concerning a trip made by a ship or aircraft and dealing with particulars of navigation, weather, engine performance, discipline, and other pertinent details; logbook. |
| 5. | Movies. an account describing or denoting each shot as it is taken, written down during production and referred to in editing the film. |
| 6. | a register of the operation of a machine. |
| 7. | Also called well log. a record kept during the drilling of a well, esp. of the geological formations penetrated. |
| 8. | Computers. any of various chronological records made concerning the use of a computer system, the changes made to data, etc. |
| 9. | Radio and Television. a written account of everything transmitted by a station or network. |
| 10. | Also called log of wood. Australian Slang. a lazy, dull-witted person; fool. |
| 11. | to cut (trees) into logs: to log pine trees for fuel. |
| 12. | to cut down the trees or timber on (land): We logged the entire area in a week. |
| 13. | to enter in a log; compile; amass; keep a record of: to log a day's events. |
| 14. | to make (a certain speed), as a ship or airplane: We are logging 18 knots. |
| 15. | to travel for (a certain distance or a certain amount of time), according to the record of a log: We logged 30 miles the first day. He has logged 10,000 hours flying time. |
| 16. | to cut down trees and get out logs from the forest for timber: to log for a living. |
| 17. | log in,
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| 18. | log off or out, Computers. to terminate a work session using a multiuser system, or a connection to such a system. |
log
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log in security
(Or "login", "log on", "logon") To start a session with a system, usually by giving a user name and password as a means of user authentication. The term is also used to mean the ability to access a service (also called an account), e.g. "Have you been given a login yet?"
"Log in/on" is occasionally misused to refer to starting a session where no authorisation is involved, or to access where there is no session involved. E.g. "Log on to our Web site!"
"login" is also the Unix program which reads and verifies a user's user name and password and starts an interactive session.
The noun forms are usually written as a single word whereas the verb forms are often written as two words.
To end a session is to "log out" or "off".
(2006-07-10)
log in
Also, log on. Enter into a computer the information needed to begin a session, as in I logged in at two o'clock, or There's no record of your logging on today. These expressions refer especially to large systems shared by numerous individuals, who need to enter a username or password before executing a program. The antonyms are log off and log out, meaning "to end a computer session." All these expressions derive from the use of log in the nautical sense of entering information about a ship in a journal called a log book. [c. 1960]