| postero | <prefix> A combining form meaning posterior, back; as, postero-inferior, situated back and below; postero-lateral, situated back and at the side. Origin: L. Posterior Source: Websters Dictionary (21 Jun 2000) |
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| posteroanterior | A term denoting the direction of view or progression, from posterior to anterior, through a part. (05 Mar 2000) |
| posteroanterior projection | The standard frontal chest film projection; radiographic skull projection with the petrous ridge superimposed on the orbits. Synonym: posteroanterior projection. (05 Mar 2000) |
| posteroclusion | The most effective contact of the molar and bicuspid teeth of both jaws which allows for all the natural movements of the jaws essential to normal mastication and closure. Synonym: posteroclusion. (05 Mar 2000) |
| posteroexternal | Behind and to one side, specifically to the outer side. Synonym: posteroexternal. (05 Mar 2000) |
| posterointernal | Behind and to the inner side. Synonym: posterointernal. (05 Mar 2000) |
| posterolateral | Behind and to one side, specifically to the outer side. Synonym: posteroexternal. (05 Mar 2000) |
| posterolateral central arteries | The circumflex mesencephalic branches, several small branches of the postcommunical part of the posterior cerebral artery distributed to the lateral posterior part of the midbrain. Synonym: arteriae centrales posterolaterales. (05 Mar 2000) |
| posterolateral fissure | The earliest fissure to appear in the development of the cerebellum; it separates the flocculus and nodulus from the uvula and tonsil. Synonym: fissura posterolateralis, prenodular fissure. (05 Mar 2000) |
| posterolateral fontanel | The membranous interval on either side between the mastoid angle of the parietal bone, the petrous portion of the temporal bone, and the occipital bone. Synonym: fonticulus mastoideus, fonticulus posterolateralis, Casser's fontanel, posterolateral fontanel. (05 Mar 2000) |
| posterolateral groove | A longitudinal furrow on either side of the posterior median sulcus of the spinal cord marking the line of entrance of the posterior nerve roots. Synonym: sulcus lateralis posterior, posterolateral groove. (05 Mar 2000) |
| posterolateral sulcus | A longitudinal furrow on either side of the posterior median sulcus of the spinal cord marking the line of entrance of the posterior nerve roots. Synonym: sulcus lateralis posterior, posterolateral groove. (05 Mar 2000) |
| posteromedial | Behind and to the inner side. Synonym: posterointernal. (05 Mar 2000) |
| posteromedial central arteries | The interpeduncular perforating branches, several small branches from the precommunical part of the posterior cerebral artery supplying the posterior medial part of the midbrain. Synonym: arteriae centrales posteromediales. (05 Mar 2000) |
| posteromedian | Occupying a central position posteriorly. (05 Mar 2000) |