Definition of synsacrum in English:

Share this entry

synsacrum

Pronunciation: /sinˈsakrəm/ /-ˈsā-/

noun (plural synsacra /-ˈsakrə/ /-ˈsākrə/ or synsacrums)

Zoology
An elongated composite sacrum containing a number of fused vertebrae, present in birds and some extinct reptiles.
Example sentences
  • The posterior thoracic vertebrae, synsacrum, and hindlimb are pneumatized by diverticula of the abdominal air sacs.
  • In most birds, diverticula of the abdominal air sacs pneumatize the posterior thoracic vertebrae and synsacrum later in ontogeny.
  • Between the notarium and synsacrum were several dorsal vertebrae that may have provided some level of dorsoventral mobility.

For editors and proofreaders

Syllabification: syn·sac·rum

Share this entry
 

What do you find interesting about this word or phrase?

Comments that don't adhere to our Community Guidelines may be moderated or removed.