Definition of opisthodome in English:

opisthodome

Pronunciation /ə(ʊ)ˈpɪsθədəʊm/

noun

Archaeology

Origin

Mid 19th century; earliest use found in Joseph Worcester (1784–1865), lexicographer and author. From ancient Greek ὀπισθόδομος opisthodomos, probably partly via French opisthodome.