| ochre | <chemical> A impure earthy ore of iron or a ferruginous clay, usually red (hematite) or yellow (limonite), used as a pigment in making paints, etc. The name is also applied to clays of other colours. A metallic oxide occurring in earthy form; as, tungstic ocher or tungstite. Origin: F.ocre, L. Ochra, fr. Gr, from pale, pale yellow. <chemical> See Ocher. Source: Websters Dictionary (01 Mar 1998) |
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| ochre codon | The codon UAA, one of the three that causes termination of protein synthesis. The most frequent termination codon in E. Coli genes. (18 Nov 1997) |
| ochre mutation | Mutation that changes any codon to the termination codon UAA. (18 Nov 1997) |
| ochre suppressor | A gene that codes for an altered tRNA so that its anticodon can recognise the ochre codon and thus allows the continuation of protein synthesis. A suppressor of an ochre mutation is a tRNA that is charged with the amino acid corresponding to the original codon or a neutral substitute. Ochre suppressors will also suppress amber codons. (18 Nov 1997) |
| ochrea | A sheath, formed from two stipules, encircling the node. (09 Oct 1997) |
| ochreated | 1. Wearing or furnished with an ochrea or legging; wearing boots; booted. "A scholar undertook..to address himself ochreated unto the vice chancellor." (Fuller) 2. <botany> Provided with ochrea, or sheathformed stipules, as the rhubarb, yellow dock, and knotgrass. Source: Websters Dictionary (01 Mar 1998) |
| ochrodermia | Yellow discoloration of the skin. Origin: G. Ochros, pale yellow, + derma, skin (05 Mar 2000) |
| ochrometer | An instrument for determining the capillary blood pressure; one of two adjacent fingers is compressed by a rubber balloon until blanching of the skin occurs, after which the force necessary to accomplish this colour change is read in millimeters of mercury. Origin: G. Ochros, pale yellow, + metron, measure (05 Mar 2000) |
| ochronosis | Deposition of dark brown pigment in cartilage, joint capsules and other tissues, usually as a result of alkaptonuria. (18 Nov 1997) |
| ochronotic | Relating to or characterised by ochronosis. (05 Mar 2000) |
| ochronotic arthritis | Osteoarthritis occurring as a complication of ochronosis. (05 Mar 2000) |
| Ochsner | Albert J., U.S. Surgeon, 1858-1925. See: Ochsner clamp, Ochsner's method. (05 Mar 2000) |
| Ochsner clamp | A straight haemostat with teeth. (05 Mar 2000) |
| Ochsner's method | An obsolete treatment for appendicitis (by peristaltic rest), when surgery is not advisable. (05 Mar 2000) |
| OCP | Oral contraceptive pill. Also known as the pill. (12 Dec 1998) |
Synonyms : Cranial Nerve IIIs, Cranial Nerve, Third, Cranial Nerves, Third, III, Cranial Nerve, IIIs, Cranial Nerve, Nerve III, Cranial, Nerve IIIs, Cranial, Nerve, Oculomotor, Nerve, Third Cranial, Nerves, Oculomotor, Nerves, Third Cranial, Oculomotor Nerves
Synonyms : Oculomotor Nerve Disorders, Oculomotor Nerve Palsy, Oculomotor Nerve Paralysis, Oculomotor Neuropathy, Partial Third-Nerve Palsy, Third Cranial Nerve Diseases, Third-Nerve Paralysis, Total Third-Nerve Palsy, Nerve Disease, Oculomotor, Nerve Diseases, Oculomotor
| occupational medicine |
that branch of medicine dealing with the study, prevention, and treatment of workplace injuries and occupational diseases and with the promotion of optimal health and safety in the workplace.
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| oculopharyngeal reflex |
rapid deglutition together with spontaneous closing of the eyes in response to irritation of the conjunctiva.
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| oculopupillary reflex |
stimulation of the cornea or of the eyelid results in dilation and then contraction of both pupils; called also oculosensory r. and trigeminus r.
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| oculovagal reflex |
pressure on the eyeball induces ectopic atrioventricular beats or rhythm.
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| occlusion rim |
record rim, a border constructed on temporary or permanent denture bases for the purpose of recording the maxillomandibular relation and for positioning the teeth. Called also bite-block, bitelock, and bite r.
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| OC | pikas and extinct forms |
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| OC | a moderate yellow-orange to orange color |
| OC | any of various earths containing silica and alumina and ferric oxide |
| OC | of a moderate orange-yellow color |
| OC | 1 species: balsa |
| OC | forest tree of lowland Central America having a strong very light wood |
| OC | an accumulation of dark pigment in cartilage and other connective tissue |
| OC | United States newspaper publisher (1858-1935) |
| OC | basil |
| OC | annual or perennial of tropical Asia having spikes of small white flowers and aromatic leave |
| OC | English scholastic philosopher and assumed author of Occam's Razor (1285-1349) |
| OC | the principle that entities should not be multiplied needlessly |