| preantiseptic | Denoting the period, especially in relation to surgery, before the adoption of the principles of antisepsis. (05 Mar 2000) |
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| preaortic | <anatomy> In front, or on the ventral side, of the aorta. Source: Websters Dictionary (01 Mar 1998) |
| preaseptic | Denoting the period, especially the early antiseptic period in relation to surgery, before the principles of asepsis were known or adopted. (05 Mar 2000) |
| preataxic | <medicine> Occurring before the symptom ataxia has developed; applied to the early symptoms of locomotor ataxia. Source: Websters Dictionary (01 Mar 1998) |
| preauricular | Anterior to the auricle of the ear; denoting lymphatic nodes so situated. (05 Mar 2000) |
| preauricular deep parotid lymph nodes | Small lymph nodes located deep to the parotid fascia and in front of the ear. Synonym: preauricular deep parotid lymph nodes. (05 Mar 2000) |
| preauricular groove | A groove on the pelvic surface of the ilium just lateral to the auricular surface; it is more pronounced in the female. Synonym: paraglenoid groove, paraglenoid sulcus, preauricular sulcus, sulcus paraglenoidalis. (05 Mar 2000) |
| preauricular point | A point of the posterior root of the zygomatic arch lying immediately in front of the upper end of the tragus. (05 Mar 2000) |
| preauricular sulcus | A groove on the pelvic surface of the ilium just lateral to the auricular surface; it is more pronounced in the female. Synonym: paraglenoid groove, paraglenoid sulcus, preauricular sulcus, sulcus paraglenoidalis. (05 Mar 2000) |
| preauricular tag | Common minor anomaly, a rudimentary tag of ear tissue, often containing a core cartilage, usually located just in front of the ear (auricle). Therefore also called preauricular tag. (12 Dec 1998) |
| preautomatic pause | A temporary pause in cardiac activity before an automatic pacemaker escapes. See: escape. (05 Mar 2000) |
| preaxial | <anatomy> Situated in front of any transverse axis in the body of an animal; anterior; cephalic; especially, in front, or on the anterior, or cephalic (that is, radial or tibial) side of the axis of a limb. Source: Websters Dictionary (01 Mar 1998) |
| preaxillary line | A vertical line extending inferiorly from the anterior axillary fold. Synonym: linea axillaris anterior, linea preaxillaris, preaxillary line. (05 Mar 2000) |
| prebronchial | <anatomy> Situated in front of the bronchus; applied especially to an air sac on either side of the oesophagus of birds. Source: Websters Dictionary (01 Mar 1998) |
| precaecal lymph nodes | Nodes located in front of the caecum draining lymph to the ileocolic nodes. Synonym: nodi lymphatici precaecales. (05 Mar 2000) |