Short medical procedures?

• Tests done by OBs
• Tests done by OB-GYNs
• Prenatal tests, for short
• Birds
• Thin innermost membranous sac enclosing the developing embryo in higher vertebrates (Amniota reptiles
• OB's perform them
• Prenatal procedures performed by OBs
• Prenatal procedures, informally

The Collaborative International Dictionary Word definitions in The Collaborative International Dictionary
Amnios \Am"ni*os\, n. Same as Amnion . [1913 Webster] ||

WordNet Word definitions in WordNet
n. thin innermost membranous sac enclosing the developing embryo of higher vertebrates (reptiles, birds and mammals) [syn: amnion , amniotic sac ]