noun, plural spec·u·la [spek-yuh-luh], /ˈspɛk yə lə/, spec·u·lums.
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Origin of speculum
Example sentences from the Web for speculum
He studied science when he could, and hired a telescope, until he learnt to make his own specula and telescopes.History of Astronomy|George Forbes
Vaginal and rectal specula have been found: also a forceps for removing fractured pieces of bone from the surface of the brain.Outlines of Greek and Roman Medicine|James Sands Elliott
The Specula Melitensis Encyclica gives an account of a kind of calculating machine of his invention.
This artifice of a double melting is often had recourse to, and especially in casting the alloys for the specula of telescopes.A Dictionary of Arts, Manufactures and Mines|Andrew Ure
I know of a gentleman who made a hundred of these specula with his own hands.The Vast Abyss|George Manville Fenn