Lumbosacral
/ˌlʌm.boʊˈseɪ.krəl/noun
Relating to the lower back and the sacrum.
Did you know?The second half comes from Latin *sacrum*, the neuter of *sacer* (“sacred”), because the sacrum was once seen as a special bone tied to ritual and the body’s hidden mysteries.
Etymological Timeline
Latin
Latin
lumbus
“loins; lower back”
Latin
Latin
sacrum (os)
“sacred bone; the sacrum”
Late Modern Scientific Latin
Latin
lumbosacralis
“pertaining to the loins and the sacrum”
19th Century
English
lumbosacral
“anatomical term for the lower back and sacral region”
Modern English
English
lumbosacral
“relating to the lumbar spine and sacrum”