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preamble
17th
apology
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manes
veratrum viride
in connection with
trading
acacia cambegei
synthesis
voluptuous
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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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