SINCE 1828
burn-in
noun
\ ˈbərn-ˌin
\
\
Definition of burn-in
(Entry 1 of 2)
: the continuous operation of a device (such as a computer) as a test for defects or failure prior to putting it to use
burn in
verb
burned in
or burnt in;
burning in;
burns in
Definition of burn in (Entry 2 of 2)
: to increase the density of (portions of a photographic print) during enlarging by giving extra exposure
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