The word "intercristal" is spelled with the prefix "inter-" meaning "between" and "cristal" referring to the "crest of a bone." The correct pronunciation of the word is [in-ter-kris-tl], with emphasis on the second syllable. The prefix "inter-" can be found in various English words, such as "international" and "interstate," meaning some form of connection or relationship between two or more entities. The word "intercristal" is commonly used in medical contexts to refer to the space between two iliac crests.
Between two crests, as between the crests of the ilia, noting one of the pelvic measurements.
A practical medical dictionary. By Stedman, Thomas Lathrop. Published 1920.