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set-back

[set-bak] /ˈsɛtˌbæk/
noun
1.
Surveying. the interval by which a chain or tape exceeds the length being measured.
2.
setback (def 4).
Origin of set-back
special use of setback

setback

[set-bak] /ˈsɛtˌbæk/
noun
1.
a check to progress; a reverse or defeat:
The new law was a setback.
2.
Architecture. a recession of the upper part of a building from the building line, as to lighten the structure or to permit a desired amount of light and air to reach ground level at the foot of the building.
3.
an act or instance of setting back:
A nightly setback of your home thermostats can save a great deal of fuel.
4.
Also, set-back. a downward temperature adjustment of a thermostat, especially performed automatically, as by a timer.
Origin
1665-75; noun use of verb phrase set back
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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Word Origin and History for setback
n.

also set-back, 1670s, "reversal, check to progress," from set (v.) + back (adv.). Sometimes backset was used in the same sense. Meaning "space between a building and a property line" is from 1916. To set (someone) back "cost" is from 1900.

Online Etymology Dictionary, © 2010 Douglas Harper
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15
17
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