cavea
Τhe auditorium or audience sitting of a theater.

cyma / cymation
Moulding decoration with ovals or tri-cusps alternating with lotus flowers. It was meant to separate or to lay stress upon two surfaces. In ancient architecture we distinguish Doric, Ionic and Lesbian cymation, according to their decoration and section form.

diazoma (lat. praecinctio)
The circular passage way between the lower and upper tiers of seats in an anient Greek theater.

isodomic masonry (opus quadratum)
A type of masonry in which blocks of equal length and thickness are laid in courses, with each vertical joint centered on the block below.

kerkides (lat. cunei)
A wedge-shaped section of seats between two stepped passageways in an greek and roman theaters.

orchestra
The performance space of the ancient Greek and Roman theatre, placed between the scene building and the cavea. It was usually semi-circular in shape and rarely circular.

pillar
Pier of square or rectangular cross-section.

proscenium (or proscaenium), the
The colonnade added in front of the skene of the ancient Greek theatre. There the intercolumnar spaces were usually closed by doors or painted panels.

Roman-Asia Minor type of theatre, the
The edifice of the theatre as it was formed during the Roman period in Asia Minor. It was a merge of the Greek and the Roman type, with koilon larger than the semi-circle and monumental mutli-storeyed scene, which often adjoined to the curve of the tiers and clogged the whole construction.

scene (lat. scaena -ae)
The stage building of the ancient theaters originally used for storage but provided a convenient backing for performances.

tribunalium
A raised platform in a Roman Theatre where the magistrates sat; These seats of honor in theatre would normally be at the extreme sides of the cavea above the two side entrances to the orchestra.