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sinumbra lamp

or si·num·bral lamp

[ si-nuhm-bruh ]

noun

  1. an unshaded sperm-oil lamp consisting of a translucent glass globe supported on a pedestal: a form of astral lamp.


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Word History and Origins

Origin of sinumbra lamp1

1825–35; < Latin sin ( e ) without + umbrā shade, shadow

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Sinuijusinuosity