procephalic
/ˌprəʊsɪˈfalɪk/ /ˌprəʊkɛˈfalɪk/adjective
Zoology. Situated on or at the front of the head; specifically designating or relating to the anterior part of the head in arthropods, or the paired embryonic lobes from which this develops.
Origin
Mid 19th century; earliest use found in Thomas Huxley (1825–1895), biologist and science educationist. From pro- + -cephalic.