Definition of "diallel" in English

adjective

1. (genetics) Involving crosses between several or all possible combinations.

2. (rare) Of lines: Meeting and intersecting; not parallel.

noun

1. A set of all possible pairs of items from a specified set of items, especially when used for a study of diallel crosses.

2. A form of logical fallacy in which a proposition that is required to prove another proposition can only be proved by means of assuming the truth of the proposition one is trying to prove; circular reasoning.