catagraph

== English == === Etymology === (This etymology is missing or incomplete. Please add to it, or discuss it at the Etymology scriptorium.) === Noun === catagraph (plural catagraphs) (obsolete) A rough draft of a picture; an outline or sketch. (obsolete) A brief, incomplete description; an outline. A structure made from the traces of canals or cavities believed to be produced by cyanophytes or bacteria during the Late Precambrian and Lower Cambrian eras.