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Definition of Log
1. Noun. A segment of the trunk of a tree when stripped of branches.
2. Verb. Enter into a log, as on ships and planes.
3. Noun. The exponent required to produce a given number.
Generic synonyms: Exponent, Index, Power
Specialized synonyms: Common Logarithm, Napierian Logarithm, Natural Logarithm
Derivative terms: Logarithmic
4. Verb. Cut lumber, as in woods and forests.
Generic synonyms: Cut Down, Drop, Fell, Strike Down
Derivative terms: Logger, Logging, Lumber
5. Noun. A written record of messages sent or received. "An email log"
6. Noun. A written record of events on a voyage (of a ship or plane).
Generic synonyms: Written Account, Written Record
7. Noun. Measuring instrument that consists of a float that trails from a ship by a knotted line in order to measure the ship's speed through the water.
Terms within: Log Line
Generic synonyms: Measuring Device, Measuring Instrument, Measuring System
Group relationships: Ship
Definition of Log
1. n. A Hebrew measure of liquids, containing 2.37 gills.
2. n. A bulky piece of wood which has not been shaped by hewing or sawing.
3. v. t. To enter in a ship's log book; as, to log the miles run.
4. v. i. To engage in the business of cutting or transporting logs for timber; to get out logs.
Definition of Log
1. to cut down trees for timber [v LOGGED, LOGGING, LOGS]
Medical Definition of Log
1. Formally, the number of times ten must be multiplied with itself to equal a certain number. For example: 100,000 is log 5 because it is equal to 10 x 10 x 10 x 10 x 10. Logs are used to measure changes in viral load (see). For example: a reduction in viral load from 100,000 to 1,000 copies/ml is a two log (or 99 percent) reduction. Note that a half log change is not a five-fold difference but a change of 3.16-fold (the square root of ten). (09 Oct 1997)