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glacier mouse. In DICTIOUS you will not only get to know all the dictionary meanings for the word
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English
Etymology
Calque of Icelandic jökla-mýs. Coined by geologist Jón Eythórsson in 1950. The Icelandic term appears only in plural form.
Noun
glacier mouse (plural glacier mice)
- (usually in the plural) A ball of moss, often surrounding a rock, that moves across a glacier.
1950, Jón Eythórsson, “Jökla-mýs”, in Journal of Glaciology, volume 1, number 9, →DOI, page 503:I call these mossy balls Jökla-mýs, literally "glacier mice," and you will have noted, Sir, that rolling stones can gather moss.
2014, James H. Dickson, Robert E. Johnson, “Mosses and the beginning of plant succession on the Walker Glacier, southeastern Alaska”, in Lindbergia, volume 37, number 2, →DOI, pages 60–65:Such glacier mice are more or less spheroidal mosses which lie unattached on the ice surface.
2020 May 22, Nell Greenfieldboyce, “Herd Of Fuzzy Green 'Glacier Mice' Baffles Scientists”, in NPR:Glacier mice can be composed of different moss species.