Architecture Dictionary: O
OBELISKS
tall square pillars, terminating in pyramids
OCTOSTYLE
a portico having eight columns in front.
ODEUM
a structure for the performance of music
OGEE or CYMA REVERSA
a moulding consisting of a round and hollow. Also the name of an arch with a double curve, one concave the other convex.
OEILLETS or EYE-LET-HOLES
small openings or loop-holes, in castellated architecture.
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