log

log

log¹ [lôg, läg]

n.

[ME logge, prob. < or akin to ON lāg (Dan laag), felled tree < base of liggia, to lie, akin to OE licgan, to LIE¹]

1. a section of the trunk or of a large branch of a felled tree, either in its natural state or cut up for use in building, as firewood, etc.

2. [because orig. a quadrant of WOOD¹] any of various devices for measuring the speed of a ship

3. a daily record of a ship's speed, progress, etc., and of the events in its voyage; logbook

4.

a) a similar record of an aircraft's flight

b) a record of a pilot's flying time, experience, etc.

5. any record of progress or occurrences, as on a journey, in an experiment, etc.

adj.

made of a log or logs

vt.

logged, logging

1. to saw (trees) into logs

☆ 2. to cut down the trees of (a region) for use as lumber or logs

3. to enter or record in a log

4. to sail or fly (a specified distance)

5. to be credited with a record of (certain accomplishments)

vi.

☆ to cut down trees and transport the logs to a sawmill

——————

log on or log off

to enter the necessary information to begin (or end) a session on a computer terminal

log² [lôg, läg]

n.

short for LOGARITHM