"remove blemishes from," 1620s, from Latin emaculatus "freed from blemishes," past participle of emaculare, from assimilated form of ex "out of" (see ex-) + maculare "make spotted, speckle" (see maculate (adj.)).
word-forming element, in English meaning usually "out of, from," but also "upwards, completely, deprive of, without," and "former;" from Latin ex "out of, from within; from which time, since; according to; in regard to," from PIE *eghs "out" (source also of Gaulish ex-, Old Irish ess-, Old Church Slavonic izu, Russian iz). In some cases also from Greek cognate ex, ek. PIE *eghs had comparative form *eks-tero and superlative *eks-t(e)r-emo-. Often reduced to e- before -b-, -d-, -g-, consonantal -i-, -l-, -m-, -n-, -v- (as in elude, emerge, evaporate, etc.).
"spotted, marked with spots," late 15c., from Latin maculatus, past participle of maculare "to make spotted, to speckle," from macula "spot, stain" (see macula). Maculate conception is attested by 1756.
<a href="https://www.etymonline.com/word/emaculate">Etymology of emaculate by etymonline</a>
Harper, D. (n.d.). Etymology of emaculate. Online Etymology Dictionary. Retrieved $(datetime), from https://www.etymonline.com/word/emaculate