• synonyms


[sin-sak-ruh m, -sey-kruh m]
See more synonyms for synsacrum on Thesaurus.com
noun, plural syn·sac·ra [sin-sak-ruh, -sey-kruh] /sɪnˈsæk rə, -ˈseɪ krə/. Ornithology.
  1. a dorsal ridge of bone in the pelvic region of birds, formed by the fusion of certain thoracic, lumbar, sacral, and caudal vertebrae.
Show More

Origin of synsacrum

First recorded in 1900–05; syn- + sacrum
Related formssyn·sa·cral, adjectivepre·syn·sa·cral, adjective
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018