ostiate--prophetes.ai

ostiate

ostiate, a. rare.
  (ˈɒstɪeɪt)
  [f. ostium + -ate².]
  = ostial a.

1897 Natural Sci. Apr. 266 The parapodial jaws and the ostiate heart cannot be supposed to have been both developed independently in each group of arthropods.

Oxford English Dictionary