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synclinorium
synclinorium n. 
/sɪŋklɪˈnɔərɪəm/ (pl. synclinoria, anglicized)
/sɪŋklɪˈnɔərɪəm/ (pl. synclinoria, anglicized) ΘΚΠ
the world > the earth > structure of the earth > structural features > fold or dip > [noun] > synclinorium
synclinorium1880
synclinore1883
1880 J. D. Dana Man. Geol. (ed. 3) 821 The mountain range, begun in a geosynclinal, and ending in a catastrophe of displacement and upturning, is appropriately named a synclinorium... (The word is from the Greek for synclinal, and ὄρος, mountain).
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