genus of woody vines, 1819, formed by Thomas Nuttall, English botanist, in recognition of American anatomist Caspar Wistar (1761-1818) of Philadelphia + abstract noun ending -ia. The -e- apparently is a misprint. The Wistar Institute was founded in 1892 by his great-nephew and named for him.
wishful
wishy-washy
wisp
wispy
wist
Wisteria
wistful
wit
witch
witch hazel
witch hunt