|chem the highest-energy occupied orbital or lowest-energy unoccupied orbital in a molecule. Such orbitals have a large influence on chemical properties|
|a screen or mat covered with a dark material for shielding a camera lens from excess light or glare.|
|a calculus or concretion found in the stomach or intestines of certain animals, esp. ruminants, formerly reputed to be an effective remedy for poison.|
Dictionary.com presents 366 FAQs, incorporating some of the frequently asked questions from the past with newer queries.