This section is from the "A Complete Dictionary of Dry Goods" book, by George S. Cole. Also available from Amazon: A complete dictionary of dry goods and history of silk, cotton, linen, wool and other fibrous substances,: Including a full explanation of the modern processes ... together with various useful tables.
Dimity (Dim-' I-Ty). [Supposed by early authorities to have been derived from Damietta, Egypt, where the fabric was once manufactured of fine linen. This is now known to be erroneous. The term is from the Greek word dimita, meaning two threads. The Greeks coined many names for their fabrics from the different combinations of the threads, as "amita," "dimita," "trimita," "exhimita," etc] A variety of white goods distinguished by raised threads or cords extending the length of the fabric. It is sometimes printed with various figures, but oftener finished plain white.