An action or instance of alteration or disappearance of inconvenient or embarrassing documents, photographs, transcripts, or other records.

present participle of skyrocket

Third-person singular simple present indicative form of overweary

(organic chemistry) An aromatic heterocyclic organic compound, C₃N₃(OH)₃, that decomposes on heating to form cyanic acid; it is a prebiotic compound found in stellar dust clouds.