ETYMOLOGY
from Latin repandus (bent backwards, turned up), from re- + pandus (bent)
EXAMPLE
“… And as indeed is deducible from pictures themselves; for though they be drawn repandous, or convexedly crooked in one piece, yet the Dolphin that carrieth Arion is concavously inverted, and hath its spine depressed in another. …”
From: Pseudodoxia Epidemica:
Or Enquiries Into Very Many Received Tenents and Commonly Presumed Truths
By Thomas Browne, 1646
Lexicophilia 