Also called pyorrhe·a al·ve·o·lar·is /ælˌviəˈlærɪs/Show Spelled[al-vee-uh-lar-is]Show IPA, Riggs' disease.Dentistry. a chronic form of periodontitis occurring in various degrees of severity, characterized in its severe forms by the formation of pus in the pockets between the roots of the teeth and their surrounding tissues, and frequently accompanied by the loosening and subsequent loss of the teeth.
an extraordinary or unusual thing, person, or event; an exceptional example or instance.
a screen or mat covered with a dark material for shielding a camera lens from excess light or glare.
a printed punctuation mark (‽), available only in some typefaces, designed to combine the question mark (?) and the exclamation point (!), indicating a mixture of query and interjection, as after a rhetorical question.
a gadget; dingus; thingumbob.
an arrangement of five objects, as trees, in a square or rectangle, one at each corner and one in the middle.