Agora

public space used for markets

roofed colonnade

Pseudoperipteral

columns all around a building

Amphitheater

round oval building with a stage in the middle

Barrel vault

vault forming half a cylinder

Groin vault

intersecting barrel vault

Fenestrated Groin Vault

groin vault with windows

Arena

an area used for public events

Rustication

leaving stones rough cut 

Attic

in the athens style

Bust

sculpture generally from shoulders up

Triumphal arch

archway made to commemorate a victory

Composite capital

combining capital style

Spandrel

triangular space between outer curve of an arch

Taberna

single room covered by a barrel vault used as an indoor market

Oculus

round opening in a ceiling

Coffer

recessed panel in a ceiling

Tetrarchy

power divided between 4

Porphyry

hard purple rock

Baptistry

part of a church used for baptism

Sarcophagus

stone coffin decorated to honor the dead

Orant

figure with extended arms in prayer

Prefiguration

something that foreshadows

Clerestory

upper part of a church containing windows

Central Plan

floor plan

Cruciform

shaped like a cross

Continuous Narrative

figures shown several times to enact a story

Fibula

a brooch or clasp

Heraldic Composition

symmetrical on either side of a main figure

Carpet Page

geometric design pages on religious manuscripts

Celtic Cross

cross with a circle around it