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cyclothem
cyclothem n. 
/ˈsɪkləθɛm/, /ˈsɪkləˌθɛm/ [Greek θέμα something laid down (see theme n.)] Geology see quot. 1932.
Brit. /ˈsʌɪkləθɛm/
, /ˈsʌɪkləθɛm//ˈsɪkləθɛm/U.S. /ˈsaɪkləˌθɛm/
, /ˈsaɪkləˌθɛm//ˈsɪkləˌθɛm/ΘΚΠ
the world > the earth > structure of the earth > age or period > stratigraphic units > [noun]
series1799
system1823
terrain1823
stage1859
group1865
section1882
horizon1926
cyclothem1932
succession1940
range zone1957
1932 Wanless & Weller in Bull. Geol. Soc. Amer. XLIII. 1003 The word ‘cyclothem’ is..proposed to designate a series of beds deposited during a single sedimentary cycle of the type that prevailed during the Pennsylvanian period.
1957 Encycl. Brit. IV. 844/1 Coals are more important than limestones in identifying cyclothems because most cyclothems include only one coal whereas two or more limestones may occur.
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- recognition picketing
- recognition scene
- recognition schema
- recognition service
- recognition signal
- recognition test
- recognition vocabulary
- recognition word
- recognitional
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- recognizance of assize
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- recognization