ancilla

Etymology
From.

Noun

 * 1)  A maid.
 * 2) An auxiliary or accessory
 * 3)  An ancilla bit
 * The circuit uses a single ancilla for each stabilizer generator.
 * 1)  An ancilla bit
 * The circuit uses a single ancilla for each stabilizer generator.

Etymology
From (diminutive form).

Noun

 * 1) maid, slave-girl
 * 2) handmaiden