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Dictionary

syn•sac•rum

Pronunciation: (sin-sak'rum, -sā'krum), [key]
—n.,
—pl. -sac•raPronunciation: (-sak'ru, -sā'kru). [key] Ornith.
a dorsal ridge of bone in the pelvic region of birds, formed by the fusion of certain thoracic, lumbar, sacral, and caudal vertebrae.

Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.

synovitis

synsepalous

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