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Variant of logo-.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
n., v. logged, log•ging. n.
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. a record concerning details of the trip of a ship or aircraft.
4. a register of the operation of a machine.
5. any of various detailed, usu. sequential records, as of the progress of an activity.
6. a written account of everything transmitted by a radio or television station or network.
7. any of various devices for determining the speed of a ship.v.t.
8. to cut (trees) into logs.
9. to cut down the trees or timber on (land).
10. to enter in a log; compile.
11. to make (a certain speed), as a ship or airplane: to log 18 knots.
12. to travel for (a certain distance or a certain amount of time), according to the record of a log: He has logged 10,000 hours flying time.v.i.
13. to cut down trees and get out logs from the forest for timber.
14. log in or on, to gain access to a secured computer system or online service by keying in personal identification information.
15. log off or out, to terminate a session on such a system or service.
[1350–1400; Middle English logge unshaped piece of wood (of obscure orig.); (definitions 4-9) shortening of logbook]
var. of logo- before a vowel: logarithm.
var. of -logue: analog.
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.