Term: radon: a radioactive gaseous element formed by the disintegration of radium; the heaviest of the inert gasses; occurs naturally (especially in areas over granite) and is considered a hazard to health
Broader: gas: a fluid in the gaseous state having neither independent shape nor volume and being able to expand indefinitely | Unrelated: spore: a small usually single-celled asexual reproductive body produced by many nonflowering plants and fungi and some bacteria and protozoans and that are capable of developing into a new individual without sexual fusion
Broader: gas: a fluid in the gaseous state having neither independent shape nor volume and being able to expand indefinitely | Unrelated: kookaburra: Australian kingfisher having a loud cackling cry
Broader: gas: a fluid in the gaseous state having neither independent shape nor volume and being able to expand indefinitely | Unrelated: camisole: a short negligee
Broader: gas: a fluid in the gaseous state having neither independent shape nor volume and being able to expand indefinitely | Unrelated: balsam: any of various fragrant oleoresins used in medicines and perfumes
Broader: gas: a fluid in the gaseous state having neither independent shape nor volume and being able to expand indefinitely | Unrelated: callithump: a noisy boisterous parade
Broader: gas: a fluid in the gaseous state having neither independent shape nor volume and being able to expand indefinitely | Unrelated: nutlet: a small nut
Broader: gas: a fluid in the gaseous state having neither independent shape nor volume and being able to expand indefinitely | Unrelated: variegation: variability in coloration
Broader: gas: a fluid in the gaseous state having neither independent shape nor volume and being able to expand indefinitely | Unrelated: gyps: a genus of Accipitridae
Broader: gas: a fluid in the gaseous state having neither independent shape nor volume and being able to expand indefinitely | Unrelated: pleximeter: a small thin metal plate held against the body and struck with a plexor in percussive examinations
Broader: gas: a fluid in the gaseous state having neither independent shape nor volume and being able to expand indefinitely | Unrelated: dwarf banana: low-growing Asian banana tree cultivated especially in the West Indies for its clusters of edible yellow fruit