| periosteum | <anatomy> The membrane of fibrous connective tissue which closely invests all bones except at the articular surfaces. Origin: NL, fr. Gr. Round the bones; around + a bone: cf. L. Periosteon. Source: Websters Dictionary (01 Mar 1998) |
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| periosteum cranii | <anatomy> The periosteum which covers the cranium externally; the region around the cranium. Source: Websters Dictionary (01 Mar 1998) |
| periostitis | <medicine> Inflammation of the periosteum. Origin: NL. See Periosteum, and -itis. Source: Websters Dictionary (01 Mar 1998) |
| periostoma | <tumour> A neoplasm derived from the periosteum. Synonym: periosteophyte, periostoma. (05 Mar 2000) |
| periostosis | The formation of a periosteoma. Synonym: periostosis. (05 Mar 2000) |
| periostosteitis | Inflammation of a bone with involvement of the periosteum. Origin: periosteum + G. Osteon, bone, + -itis, inflammation (05 Mar 2000) |
| periostotome | A strong scapel-shaped knife, for cutting the periosteum. Synonym: periostotome. (05 Mar 2000) |
| periostotomy | The operation of cutting through the periosteum to the bone. Synonym: periostotomy. Origin: periosteo-+ G. Tome, incision (05 Mar 2000) |
| periostracum | Origin: NL, fr. Gr. Around + shell of a testacean. <zoology> A chitinous membrane covering the exterior of many shells. Synonym: epidermis. Source: Websters Dictionary (01 Mar 1998) |
| periotic | <anatomy> Surrounding, or pertaining to the region surrounding, the internal ear; as, the periotic capsule. A periotic bone. Origin: Pref. Peri- + Gr, the ear. Source: Websters Dictionary (01 Mar 1998) |
| periotic bone | The part of the temporal bone that contains the structures of the inner ear and the second part of the internal carotid artery; in antenatal life it appears as a separate ossification centre. Synonym: pars petrosa ossis temporalis, periotic bone, petrosal bone, petrous pyramid. (05 Mar 2000) |
| periotic cartilage | A cartilaginous mass on either side of the chondrocranium surrounding the developing auditory vesicle in the foetus; the otic capsule in its early cartilaginous stage. (05 Mar 2000) |
| periovaritis | Inflammation of the peritoneal covering of the ovary. Synonym: periovaritis. Origin: peri-+ Mod. L. Oophoron, ovary, + -itis, inflammation (05 Mar 2000) |
| periovular | Surrounding the ovum. (05 Mar 2000) |