| MCAT | medical college admission test; middle cerebral artery thrombosis |
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| MHA | major histocompatibility antigen; May-Hegglin anomaly; Mental Health Association; methemalbumin; mic... |
| MUA | manipulation under anesthesia; middle uterine artery; motor unit activity |
| RMC | reticular magnocellular [nucleus]; right middle cerebral [artery] |
| RMCA | right middle cerebral artery |
| communicating branch of otic ganglion with meningeal branch of mandibular nerve | <anatomy, nerve> A branch of otic ganglion to the meningeal branch of mandibular nerve conveying postsynaptic parasympathetic fibres which run back to the main stem of the mandibular nerve for distribution to the parotid gland via the auriculotemporal nerve. Synonym: ramus communicans ganglii otici cum ramo meningeo nervi mandibularis. (05 Mar 2000) |
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| tuberculosis, meningeal | Tuberculous meningitis. The causative agent is mycobacterium tuberculosis. (12 Dec 1998) |
| anterior wall of middle ear | It contains the carotid canal and the opening of the auditory tube. Synonym: paries caroticus cavi tympani, anterior wall of middle ear, carotid wall of middle ear. (05 Mar 2000) |
| carotid wall of middle ear | It contains the carotid canal and the opening of the auditory tube. Synonym: paries caroticus cavi tympani, anterior wall of middle ear, carotid wall of middle ear. (05 Mar 2000) |
| mastoid wall of middle ear | It contains the opening into the mastoid antrum. Synonym: paries mastoideus cavi tympani, mastoid wall of middle ear, posterior wall of middle ear. (05 Mar 2000) |
| cavity of middle ear | An air chamber in the temporal bone containing the ossicles; it is lined with mucous membrane and is continuous with the auditory tube anteriorly and the tympanic antrum and mastoid air cells posteriorly. Synonym: cavitas tympanica, cavity of middle ear, cavum tympani, tympanum. (05 Mar 2000) |
| medial wall of middle ear | A bony layer separating the middle from the internal ear or labyrinth; it contains the fenestra vestibuli and the fenestra cochleae. Synonym: paries labyrinthicus cavi tympani, labyrinthine wall of middle ear, medial wall of middle ear. (05 Mar 2000) |
| ceratopharyngeal part of middle pharyngeal constrictor | See: middle constrictor muscle of pharynx. Synonym: pars ceratopharyngea musculi constrictoris pharyngis medii. (05 Mar 2000) |
| membranous wall of middle ear | The wall formed mainly by the tympanic membrane. Synonym: paries membranaceus cavi tympani, lateral wall of middle ear, membranous wall of middle ear. (05 Mar 2000) |
| right middle lobe syndrome | <radiology> Controversial, associated with asthma, cough, wheezing, recurrent pneumonia, XR findings: total or partial RML atelectasis, with or without bronchial narrowing (12 Dec 1998) |
| cholesteatoma, middle ear | Cholesteatoma associated with chronic infection of the middle ear, formed of the outer desquamating layers of stratified squamous epithelium which has extended inward and upward to line the tympanum, epitympanum, and antrum. (12 Dec 1998) |
| chondropharyngeal part of middle pharyngeal constrictor | See: middle constrictor muscle of pharynx. Synonym: pars chondropharyngea musculi constrictoris pharyngea medii. (05 Mar 2000) |
| middle | 1. Equally distant from the extreme either of a number of things or of one thing; mean; medial; as, the middle house in a row; a middle rank or station in life; flowers of middle summer; men of middle age. 2. Intermediate; intervening. "Will, seeking good, finds many middle ends." (Sir J. Davies) Middle is sometimes used in the formation of selfexplaining compounds; as, middle-sized, middle-witted. Middle Ages, the period of time intervening between the decline of the Roman Empire and the revival of letters. Hallam regards it as beginning with the sixth and ending with the fifteenth century. Middle class, in England, people who have an intermediate position between the aristocracy and the artisan class. It includes professional men, bankers, merchants, and small landed proprietors "The middle-class electorate of Great Britain." (M. Arnold) Middle distance. See Voice. Middle watch, the period from midnight to four A. M.; also, the men on watch during that time. Middle weight, a pugilist, boxer, or wrestler classed as of medium weight, i. E, over 140 and not over 160 lbs, in distinction from those classed as light weights, heavy weights, etc. Origin: OE. Middel, AS. Middel; akin to D. Middel, OHG. Muttil, G. Mittel. See Mid. Source: Websters Dictionary (01 Mar 1998) |
| middle atlantoepistrophic joint | A pivot synovial joint between the dens of the axis and the ring formed by the anterior arch and the transverse ligament of the atlas. Synonym: articulatio atlantoaxialis mediana, Cruveilhier's joint, middle atlantoepistrophic joint. (05 Mar 2000) |
| middle axillary line | A vertical line intersecting a point midway between the anterior and posterior axillary folds or lines. Synonym: linea axillaris media, linea medio-axillaris, middle axillary line. (05 Mar 2000) |