English
streamgraph
From stream + graph.
Proto-Indo-European *srew- ‘to flow’
…
Proto-Germanic *straumaz
Proto-West Germanic *straum
Old English strēam
Middle English streem
English stream
Today it means
noun A stacked area graph that is displaced around a central horizontal axis.
Language periods are conventional ranges, not dates for this word.
Etymograph / streamgraph