plural noun
Hip·po·cas·ta·na·ce·ae | \ ˌhipəˌkastəˈnāsēˌē \

Definition of Hippocastanaceae 

: a family of trees (order Sapindales) having opposite palmately lobed leaves, showy flowers in large clusters, and nutlike seeds encased in a leathery capsule and including the buckeyes

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History and Etymology for Hippocastanaceae

New Latin, from Hippocastanum, type genus in former classifications (from hipp- + Greek kastanon chestnut) + -aceae

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characteristic trappings or dress

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