|sinən.|tektik, -iˌnan.- adjective
or syn·an·tet·ic -ed.ik
Etymology: synantectic alteration of synantetic; synantetic from (assumed) Greek synantetos (verbal of Greek synantan to meet, encounter, from syn- + antan to meet face to face, from anta opposite) + English -ic; akin to Greek anti against — more at end
: formed by the reaction of two other minerals — compare corona 2h