Expressed in hieroglyphs; written in or inscribed with symbolic characters: as, the hieroglyphic language of Egypt; hieroglyphic records; a hieroglyphic obelisk.Mysteriously symbolic or emblematic; hard to decipher or interpret.In entomology, having distinct, irregular color-markings, suggestive of Egyptian hieroglyphs: applied to the elytra of certain Coleoptera, etc.n. Same as hieroglyph.Of or pertaining to certain vermiform structures which occur in the flysch, in Carpathian sandstone, and in the marine facies of the Cretaceous and Jurassic formations of the Alps. See II, 2.n. One of certain vermiform structures, abundant in the Cretaceous and Jurassic rocks of some countries, probably in part the trails of mollusks or worms.