| 单词 | synsacrum | 
| 释义 | > as lemmassynsacrum   synsacrum  n.  Brit.  , U.S.  				 [modern Latin,  <  sacrum n.]			 Anatomy the composite sacrum, consisting of a number of vertebræ united, in birds and some extinct reptiles.ΘΚΠ the world > animals > reptiles > extinct reptiles and dinosaurs > 			[noun]		 > part of tarso-metatarsal1851 tarso-metatarsus1854 synsacrum1903 the world > animals > birds > bones > 			[noun]		 > united vertebrae sacrarium1890 synsacrum1903 1903    Proc. Zool. Soc. 17 Mar. 273  				The most complete synsacrum is that of Coua, and is made up as follows:—1 thoracic, 3 lumbar, 3 lumbo-sacral, 2 sacral, and 4 caudal [vertebræ]. < as lemmas  | 
	
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