lighting

plural lightings

1. countableuncountableThe equipment used to provide illumination; the illumination so provided.

   The acetylene gas lighting in the station offices and platforms at Kyle of Lochalsh recently has been replaced by electric lighting.

   1951 April, “Notes and News: Improvements at Kyle of Lochalsh”, in Railway Magazine, number 600, page 281

   1 more example

   The dawn of the oil age was fairly recent. Although the stuff was used to waterproof boats in the Middle East 6,000 years ago, extracting it in earnest began only in 1859 after an oil strike in Pennsylvania.[…]It was used to make kerosene, the main fuel for artificial lighting after overfishing led to a shortage of whale blubber. Other liquids produced in the refining process, too unstable or smoky for lamplight, were burned or dumped.

   2013 August 3, “Yesterday’s fuel”, in The Economist, volume 408, number 8847

   Synonyms: illumination, light source, light

2. countableuncountableThe act of activating such equipment, or of igniting a flame etc.

   We've observed plenty of strikings followed by lightings, so even if we should not say that the strikings cause the lightings, isn't it at least reasonable to predict, and to believe, that the next time we strike a match in similar conditions, it will be followed by a lighting?

   2012, Andrew Pessin, Uncommon Sense, page 142

3. countabledateduncountableThe process of annealing metals.

1. gerundparticiplepresentpresent participle and gerund of light