| extradural | External (outside) to the dura mater. (16 Dec 1997) |
|---|---|
| extradural anaesthesia | Anaesthetization, by local anaesthetics, of nerves near the spinal canal external to the dura mater; often refers to epidural anaesthesia, but may include paravertebral anaesthesia. (05 Mar 2000) |
| extradural haematorrhachis | haematorrhachis externa |
| extradural haemorrhage | An accumulation of blood between the skull and the dura mater. Synonym: epidural haematoma. (05 Mar 2000) |
| extradural mass | <radiology> Disc, haematoma (traumatic fracture), metastasis (epidural, bony), abscess, neurofibroma, lipoma, arachnoid cyst (12 Dec 1998) |
| extraembryonic | Outside the embryonic body; e.g., those membranes involved with the embryo's protection and nutrition which are discarded at birth without being incorporated in its body. (05 Mar 2000) |
| extraembryonic blastoderm | That part of the blastoderm which is not incorporated in the embryo but forms membranes concerned in its nourishment and protection. (05 Mar 2000) |
| extraembryonic celom | That portion of the celom that extends beyond the confines of the embryonic body. (05 Mar 2000) |
| extraembryonic ectoderm | Derivative of epiblast outside the embryo's body. (05 Mar 2000) |
| extraembryonic membrane | A structure or tissue that develops from the fertilised ovum but does not form part of the embryo proper. Synonym: embryonic membrane, extraembryonic membrane. (05 Mar 2000) |
| extraembryonic mesoderm | Extraembryonic ectoderm cells or tissues which, though derived from the zygote, are not part of the embryo proper and along with the extraembryonic mesoderm form the foetal membranes (e.g., amnion). Synonym: primary mesoderm. (05 Mar 2000) |
| extraepiphysial | Not relating to, or connected with, an epiphysis. (05 Mar 2000) |
| extrafoliaceous | <botany> Away from the leaves, or inserted in a different place from them; as, extrafoliaceous prickles. Origin: Pref. Extra + foliaceous. Source: Websters Dictionary (01 Mar 1998) |
| extragenital | Outside of, away from, or unrelated to, the genital organs. (05 Mar 2000) |
| extrahepatic | Outside of, or unrelated to, the liver. (05 Mar 2000) |