| conchal crest of palatine bone | The ridge on the nasal surface of the perpendicular part of the palatine bone to which the inferior nasal concha attaches. Synonym: crista conchalis ossis palatini. (05 Mar 2000) |
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| conchoidal | Shaped like a shell; having alternate convexities and concavities on the surface. Origin: concha + G. Eidos, appearance (05 Mar 2000) |
| conchoidal bodies | Concentrically laminated calcified body's found in granulomas, particularly in sarcoidosis. Synonym: conchoidal bodies. (05 Mar 2000) |
| concolourous | Coloured uniformly, the same colour on both sides. (09 Oct 1997) |
| concomitance | In esotropia, one eye accompanying the other in all excursions, as in concomitant strabismus. Origin: con-+ L. Comito-, pp. -atus, to accompany (05 Mar 2000) |
| concomitant | Accompanying, accessory, joined with another. Origin: L. Concomitans (18 Nov 1997) |
| concomitant immunity | The paradoxical immune status in which resistance to reinfection coincides with the persistence of the original infection. Synonym: concomitant immunity. (05 Mar 2000) |
| concomitant strabismus | A condition in which the degree of strabismus is the same in all directions of gaze. Synonym: concomitant strabismus. (05 Mar 2000) |
| concomitant symptom | A symptom that usually but not always accompanies a certain disease, as distinguished from a pathognomonic symptom. Synonym: assident symptom, concomitant symptom. (05 Mar 2000) |
| concordance | Agreement in the types of data that occur in natural pairs. For example, in a trait like schizophrenia, a pair of identical twins is concordant if both are affected or both are unaffected; it is discordant if one of them only is affected. Likewise, the pairs might be non-identical twins, or sibs, or husband and wife, etc. Origin: L. Concordia, agreeing, harmony (05 Mar 2000) |
| concordance rate | The proportion of a random sample of pairs that are concordant for a trait of interest. A high rate of concordance may be generated in several ways, many of which may result from irrelevant bias; but broadly it is taken as evidence of causal connection (e.g., in the case of identical twins, a genetic component or in spouses of assortative mating). (05 Mar 2000) |
| concordant | Denoting or exhibiting concordance. (05 Mar 2000) |
| concordant alternans | Simultaneous occurrence of right ventricular and pulmonary artery alternans with left ventricular and peripheral pulsus alternans. (05 Mar 2000) |
| concordant alternation | The alternation in either the mechanical or electrical activity of the heart, occurring in both systemic and pulmonary circulations. (05 Mar 2000) |
| concordant atrioventricular connections | Connections in which the atrial chambers connect to the morphologically appropriate ventricles. (05 Mar 2000) |