Main Entry: grap·to·lite

Pronunciation: \ˈgrap-tə-ˌlīt\

Function: noun

Etymology: Greek graptos painted (from graphein to write, paint) + English -lite — more at carve

Date: 1841

: any of an extinct class (Graptolithina) of hemichordate colonial marine animals of the Paleozoic era with zooids contained in conical cups along a chitinous support