Andrew Peterson published the Dictionary of Islamic Architecture in 1996, and the contents of that dictionary are available through ArchNet, with links to related images of buildings and publications hosted on ArchNet.
ArchNet offers a variety of resources beyond the Dictionary of Islamic Architecture, including a digital library of images and publications as well as discussion forums and other information related to the study of international Islamic culture architecture. ArchNet is free to use as long as you create an account.
Click here to visit the Dictionary of Islamic Architecture.