Definitions
01wood
B1 · Intermediate Countable noun
n. a thick piece of wood that has fallen or been cut from a tree.
n. a segment of the trunk or a large limb of a felled tree, cleared of branches and suitable for fuel or timber.
日本語:丸太※
“We put another log on the fire to keep the living room warm.”
“The hikers sat on a moss-covered log to rest before continuing their ascent through the dense pine forest.”
02a record
B2 · Upper Intermediate Countable noun Computing
n. an official record of events, especially on a ship, aircraft, or computer system.
n. a systematic, chronological record of events, observations, or data, particularly regarding the operation of a vessel or computer network.
日本語:ログ※
“The captain kept a daily log of the ship's position and the weather.”
“The system administrator reviewed the server logs to identify the exact moment the security breach occurred.”
03math
C1 · Advanced Countable noun Mathematics Technical
n. a short way of saying 'logarithm'.
n. a shortened form of logarithm, representing the power to which a base must be raised to produce a given number.
日本語:ログ※
“You need to calculate the log of this number to solve the equation.”
“The decibel scale is based on a log scale, which allows for the representation of a vast range of sound intensities.”
Synonyms
04vulgar slang
C2 · Proficiency Countable noun Vulgar · Slang
n. a piece of solid waste from the body.
n. a piece of excrement, specifically one that is relatively long and solid.
“The dog left a large log right in the middle of the sidewalk.”
“The plumber discovered a solid log of waste obstructing the main drainage pipe, necessitating a high-pressure flush.”
05to record
B2 · Upper Intermediate
v. to write down or enter information into a record.
v. to enter details of an event or period of time into a formal record or database.
“The pilot must log every hour she spends flying the plane.”
“The software automatically logs every user interaction to help the developers improve the interface design.”
06to travel
C1 · Advanced Nautical Technical
v. to travel a certain distance or at a certain speed.
v. to achieve or record a specific distance or speed, typically in the context of navigation or transport.
“The ship logged over three hundred miles in a single day.”
“During the sea trials, the vessel logged a top speed of twenty-five knots despite the heavy swell.”
07to cut wood
B2 · Upper Intermediate
v. to cut down trees for wood.
v. to fell trees and prepare them for transport as timber, often as a commercial activity.
Español:talar
“The company was given permission to log this section of the forest.”
“Environmental groups protested the decision to log the ancient woodland, citing the potential loss of biodiversity.”
Collocations
Common phrases and expressions where native English speakers use the word “log” in context.
Noun
01. log ratio
“In statistics, the log ratio is frequently used to compare the relative proportions of two different quantities.”
noun + noun
Real-World Examples
“Please log in here to leave a comment.” “Sam Smith logs on to our video call with the username “Lily of the Valley”, the May-born singer’s birth flower.” Etymology
From Middle English logge, logg (first recorded in Anglo-Latin as loggum), of uncertain origin, but probably from Old Norse lóg, lág (“felled tree, log”), derived from Old Norse liggja (“to lie”). If so, then cognate with Norwegian låg (“fallen tree”), Dutch loog (“wood, timber, lumber”). Alternatively, directly from Norwegian låg (“fallen tree”), which could have been borrowed through the Norwegian timber trade. However the Old Norse/Middle Norwegian vowel is long while Middle English vowel is short.
Clipping of logbook, itself from log (etymology 1) + book, from a wooden float (chip log) used to measure speed.
Ellipsis of log out, itself from Etymology 2.
From Hebrew לֹג.
A clipping of logarithm.
Etymology adapted from Wiktionary, available under CC BY-SA 4.0.
Word family
NOUN
Related words
Idioms
Domains
- Exam level
- CambridgeCambridgeCambridge English QualificationsThe exam suite from Cambridge University Press & Assessment, from A1 Movers up to C2 Proficiency. The benchmark names double as CEFR labels.C1 AdvancedIELTSIELTSInternational English Language Testing SystemThe 0–9 band test co-owned by the British Council, IDP, and Cambridge. Used for university entry, work, and migration.7.0–8.0TOEFL iBTTOEFL iBTTest of English as a Foreign Language, Internet-Based TestETS's academic English test, the standard route for US university admissions. Scored 0–120, with a 1–6 scale since 2026.1–6 scale: 5.0–5.595–113TOEICTOEICTest of English for International CommunicationETS's workplace English test, big in Japan and Korea. Listening & Reading scores 10–990 and tops out at C1.945–990
- Frequency
- Common
- Level
- C1 · AdvancedOxford
- Updated
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QR code
englishreference.com/q/log
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「日本語」「カタカナ語」 data: JMdict (EDRDG), CC BY-SA 4.0
Traducciones: Kaikki.org (Wiktionary), CC BY-SA 4.0