Code coverage means, how well your test set is covering your source code. i.e. to what extent is the source code covered by the set of Test cases. As mentioned in above answers, there are various coverage criteria, like paths, conditions, functions, statements, etc.
Chiasmus. Definition: Chiasmus is a specific type of parallelism. It consists of two parallel phrases in which corresponding words or phrases are placed in the opposite order.
a reversal in the order of words in two otherwise parallel phrases, as in âHe went to the country, to the town went she.â. Origin of chiasmus. Greek. 1870-1875. 1870-75; < Greek chiasmÃ³s, equivalent to chi chi1 + -asmos masculine noun suffix, akin to -asma; see chiasma.