शोधक

Etymology
.

Adjective

 * 1) purificatory, purifying, refining
 * 2) cleansing, purgative
 * 3) investigating

Noun

 * 1)  the subtrahend, the quantity to be subtracted from a number (to render it capable of yielding an exact square root)
 * 2) a purifier,
 * 3) an investigator, researcher

Etymology
.

Adjective

 * 1) purificatory

Noun

 * 1) purifier
 * 2) corrective
 * 3)  "corrector", the subtrahend, the quantity to be subtracted from a number (to render it capable of yielding an exact square root)