clarification

Short definition from Wiktionary

Noun

1. 1
   The act of clarifying; the act or process of making clear or transparent by freeing visible impurities; particularly, the clearing or fining of liquid substances from impurities via the separation of the insoluble particles which prevent the liquid from being transparent.
2. 2
   The act of freeing from obscurities; disambiguation.
3. 3
   An explanatory comment on, or question about, a point of obscurity.
4. 4
   A small piece of writing supplemental to a previously published text, intended to disambiguate, explain away obscurities, but not contradict or emend the text (as would a correction).
5. 5
   Clarity, transparency, mutual understanding; to be clear.