| Iceland disease | An epidemic disease characterised by stiffness of the neck and back, headache, diarrhoea, fever, and localised muscular weakness; restricted almost exclusively to adults, affecting women more than men; probably viral in origin. Synonym: Akureyri disease, benign myalgic encephalomyelitis, epidemic myalgic encephalomyelitis, Iceland disease. (05 Mar 2000) |
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| iceland moss | <botany> A kind of lichen (Cetraria Icelandica) found from the Arctic regions to the North Temperate zone. It furnishes a nutritious jelly and other forms of food, and is used in pulmonary complaints as a demulcent. Source: Websters Dictionary (01 Mar 1998) |
| iceland spar | <chemical> A transparent variety of calcite, the best of which is obtained in Iceland. It is used for the prisms of the polarizcope, because of its strong double refraction. Cf. Calcite. Source: Websters Dictionary (01 Mar 1998) |