Any of various shrubs of the genus Hydrangea, having opposite leaves and large, flat-topped or rounded clusters of white, pink, or blue flowers.
Any of a genus (Hydrangea) of shrubs or vines of the saxifrage family, with opposite leaves and large, showy clusters of blue, white, or pink flowers, often sterile.
Origin of hydrangea
From Ancient Greek ὕδωρ (hydor, “water”) and ἄγγος (aggos, “jar”) after the shape of its fruits. Named by botanist Carl von Linnaeus (1707-1778).