| 1. | a discordant state; disagreement; discord. |
| 2. | an instance of this. |
| 3. | dissonance. |
| 4. | Geology. lack of parallelism between adjacent strata, as in an angular unconformity. |
| 5. | (in genetic studies) the degree of dissimilarity in a pair of twins with respect to the presence or absence of a disease or trait. |
discordance dis·cor·dance (dĭ-skôr'dns)
n.
The presence of a given genetic trait in only one member of a pair of identical twins.