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        | sharp, slender, often pointed projection |  | 
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        | small, rounded projection or process |  | 
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        | narrow ridge of bone, usually prominent |  | 
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 | Definition 
 
        | large rounded projection, may be roughened |  | 
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 | Definition 
 
        | bony expansion carried on a narrow neck |  | 
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 | Definition 
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 | Definition 
 
        | rounded articular projection |  | 
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 | Definition 
 
        | round or oval opening through a bone |  | 
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 | Definition 
 
        | shallow, basin-like depression in a bone, often serving as an articular surface |  | 
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 | Definition 
 
        | space within a bone, filled with air, and lined with mucus membrane |  | 
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 | Definition 
 
        | very large blunt, irregularly shaped process (the only examples are found on a femur) |  | 
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 | Definition 
 
        | smooth, nearly flat aticular surface |  | 
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        | narrow ridge of bone, less prominent than a crest |  | 
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        | raised process on or above a condyle |  | 
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