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单词 calamite
释义

calamiten.

/ˈkaləmʌɪt/
Etymology: < modern Latin generic name calamītes , < Latin calamus reed; see -ite suffix1.
1. Palaeontology. A fossil plant, of a genus or order abundant in the Coal Measures, of which the stems are found in jointed fragments, ribbed and furrowed. They are generally considered to have been allied to the existing Equisetaceæ or Mare's-tails, but their stem was furnished with wood and bark.
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the world > plants > particular plants > plants and herbs > fossil plants > [noun]
cycadite18..
Bothrodendron1835
lepidodendron1836
calamite1837
sphenophyllum1837
stigmaria1845
polyporite1846
fucoid1848
Muscites1859
lepidodendrid1863
Bennettites1871
lepidodendroid1872
progymnosperm1885
pteridosperm1904
Bennettitales1907
seed fern1907
1837 Penny Cycl. VII. 293/2 Calamites have been found with a diameter of fourteen inches.
1842 H. Miller Old Red Sandstone (ed. 2) vii. 175 Some plant resembling a calamite of the Coal Measures.
1873 J. W. Dawson Story Earth & Man v. 104 Calamites, gigantic and overgrown mares'-tails.
2. Mineralogy. A variety of tremolite (white hornblende) occurring in crystals sometimes reed-like.
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1882 H. Watts Dict. Chem. III. 169 Calamite is an asparagus-green variety of tremolite, found..in Sweden.
3. ‘A name given by some to the osteocolla..others have called some of the fossile coralloides by this name.’ Obsolete.
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1753 Chambers's Cycl. Suppl.
This entry has not yet been fully updated (first published 1888; most recently modified version published online June 2018).
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n.1753
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