noun
arithmetic shift
A bitwise shift operation that preserves the sign bit, used in computing contexts.
算術けた送りは、符号ビットを保持しながらビット列を左右に移動させる操作です。
An arithmetic shift is an operation that moves a bit string left or right while preserving the sign bit.
Compound of 算術 (arithmetic) + けた (digit/column) + 送り (shift/sending). The term is a direct calque from English 'arithmetic shift'.