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| a calculus or concretion found in the stomach or intestines of certain animals, esp. ruminants, formerly reputed to be an effective remedy for poison. |
| a screen or mat covered with a dark material for shielding a camera lens from excess light or glare. |
| Cannon (kān'ən) Pronunciation Key
American astronomer noted for her work on classifying stellar spectra. Cannon classified the spectra of 225,300 stars brighter than magnitude 8.5, as well as 130,000 fainter stars. |
cannon definition
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