Also, hieroglyphical. designating or pertaining to a pictographic script, particularly that of the ancient Egyptians, in which many of the symbols are conventionalized, recognizable pictures of the things represented.

inscribed with hieroglyphic symbols.

hard to decipher; hard to read.

Also, hieroglyph. a hieroglyphic symbol.

Usually, hieroglyphics. hieroglyphic writing.

a figure or symbol with a hidden meaning.

hieroglyphics, handwriting, figures, characters, code, etc., difficult to decipher

the confusing hieroglyphics of advanced mathematics.

adjective

illustrative , photographic , pictographic , pictorial