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1780s
accessory after the fact
rectified
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theatre studies
remain
mitchum
go off half-cocked
lexicon
diplomacy
void
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concave lens
concave lens
/kɒnˈkeɪv lɛnz/
noun
A lens such that a parallel beam of light passing through it is caused to diverge or spread out
(
concave lens
,
diverging lens
)
a lens such that a parallel beam of light passing through it is caused to diverge or spread out
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