preillumination

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noun

Illumination prior to some other process.

Scrabble 19
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Meanings

nounpreillumination (uncountable)
  1. uncountableIllumination prior to some other process.

    However under UVA preillumination, Bacillus anthracis when interacted with TiO 2 -NPs exhibited a synergistic toxic effect.

    2015 October 24, “Decreased Phototoxic Effects of TiO₂ Nanoparticles in Consortium of Bacterial Isolates from Domestic Waste Water”, in PLOS ONE, →DOI
    1 more example

    The lag period in chlorophyll synthesis can be eliminated by exposing the dark-grown cells to a 2-h preillumination period followed by a 12-h dark period prior to placing them in continuous light for chloroplast development[.]

    2013, Hans Mohr, Photomorphogenesis, →ISBN, page 323

Origin

From pre- + illumination.

Full word history & related roots →
Cite this entry
APA

preillumination. (n.d.). In WatkinsX Dictionary. Retrieved November 3, 2026, from https://dictionary.watkinsx.com/word/preillumination

MLA

“preillumination.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/preillumination. Accessed November 3, 2026.

Chicago

WatkinsX Dictionary, s.v. “preillumination,” accessed November 3, 2026, https://dictionary.watkinsx.com/word/preillumination.

Source: preillumination on Wiktionary, CC BY-SA 4.0.