osvtlením
Osvtlením is not a standard Czech word. It is typically a misspelling or ASCII rendering of the instrumental form osvětlením, which means by illumination or through illumination. In formal writing the diacritized form osvětlením is used; non-diacritic variants such as osvetlením are common in plain-text texts, but osvtlením is generally considered incorrect.
Etymology and meaning: The form derives from the root osvětl- from the verb osvětlit (to illuminate) and
Usage: The term appears in technical and everyday Czech when discussing lighting or illumination. In standard
See also: osvětlení, osvětlování, osvětlení. These related terms cover the nouns and activities connected with lighting