Noun
of Speculum
A mirror, or looking-glass; especially, a metal mirror, as in Greek and Roman archaeology.
A reflector of polished metal, especially one used in reflecting telescopes. See Speculum metal, below.
An instrument for dilating certain passages of the body, and throwing light within them, thus facilitating examination or surgical operations.
A bright and lustrous patch of color found on the wings of ducks and some other birds. It is usually situated on the distal portions of the secondary quills, and is much more brilliant in the adult male than in the female.
Source: Webster's dictionaryBecause of the poor reflectivity of the speculum mirrors of that day, Herschel eliminated the small diagonal mirror of a standard newtonian reflector from his design and tilted his primary mirror so he could view the formed image directly. Source: Internet
A doctor or nurse will gently insert an instrument called a speculum into your vagina, which holds the walls open so the cervix can be seen. Source: Internet
In his youth, Yaroslav was sent by his father to rule the northern lands around Rostov but was transferred to Veliky Novgorod, Yaroslav the Wise in Norse Tradition, Samuel Hazzard Cross, Speculum, 178. as befitted a senior heir to the throne, in 1010. Source: Internet
Mommsen "Petrarch's Conception of the 'Dark Ages'" Speculum pp. 236–237 When referring to their own times, they spoke of them as being "modern". Source: Internet
Many health care providers are under the false impression that only sterile water, or no lubricant at all, should be used to lubricate the speculum. Source: Internet
Scott E. Hendrix, How Albert the Great's Speculum Astronomiae Was Interpreted and Used by Four Centuries of Readers (Lewiston: 2010), 44-46. Source: Internet