Definitions

1. adjective

relating to or characteristic of a semidirect product or semidirect sum

“The mathematician studied semidirect groups and their applications in physics.”

2. noun

a product or sum of two groups, one of which is a homomorphic image of a subgroup of the other

“Researchers used semidirect methods to analyze complex algebraic structures.”

3. noun

a type of direct product of two groups, one of which is a subgroup of the other

“The professor explained the concept of semidirect products in her lecture.”