ambulacriform--prophetes.ai

ambulacriform, a.
  (æmbjuːˈleɪkrɪfɔːm, -ˈækrɪ-)
  [f. as prec. + -iform.]
  Having the shape or appearance of ambulacra.

1837 Penny Cycl. IX. 259/2 Mouth subcentral..with five converging, ambulacriform furrows. 1879 in Syd. Soc. Lex.

Oxford English Dictionary