(databases) A database whose records are linked in a tree-like structure, each child record having a single primary parent.

Holy, sacred. / (chiefly Eastern Orthodoxy) Denoting a man of a title such as a monk who is also a clergyman (e.g. hieromonk, hierodeacon, hieromartyr)

(chiefly in the plural) A writing system of ancient Egypt, Minoans, Maya and other civilizations, using pictorial symbols to represent individual sounds as a rebus

of, relating to, or written with this system of symbols / difficult to decipher

Of or pertaining to priests, especially pharaonic priests of Ancient Egypt.

(historical) A writing system used in pharaonic Egypt that was developed alongside the hieroglyphic system, primarily written in ink with a reed brush on papyrus, allowing scribes to write quickly without resorting to the time consuming hieroglyphs.

plural of hierarchy

Government by ecclesiastics. / (historical, Middle Ages) The doctrine that the pope held supreme temporal, and not just spiritual, power.

plural of hierarch

plural of hierocracy