| vestigial | Refers to an organ or part (for example, the human appendix) which is greatly reduced from the original ancestral form and is no longer functional. (09 Oct 1997) |
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| vestigial fold | A pericardial fold lying between the left oblique vein of the atrium and the left superior pulmonary vein containing the obliterated remains of the left superior vena cava. Synonym: plica venae cavae sinistrae, Marshall's vestigial fold, vestigial fold. (05 Mar 2000) |
| vestigial muscle | <anatomy> An imperfect structure in man corresponding to a functioning muscle in the lower animals. (05 Mar 2000) |
| vestigial organ | A rudimentary structure in humans corresponding to a functional structure or organ in the lower animals. (05 Mar 2000) |
| Marshall's vestigial fold | A pericardial fold lying between the left oblique vein of the atrium and the left superior pulmonary vein containing the obliterated remains of the left superior vena cava. Synonym: plica venae cavae sinistrae, Marshall's vestigial fold, vestigial fold. (05 Mar 2000) |
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