These terms can have many meanings:
For the ripeness of grapes, see ripening time, as well as maturation, must weight, physiological ripeness, grape variety, vegetation cycle and grape harvest.

For the ageing of a wine, see barrel, barrique ageing and barrel ageing.
For the development, maturation and peak of a wine, see ageing, bottle ageing and shelf life, and for the time of consumption, see drinking maturity.
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Serious sources on the internet are rare - and Wine lexicon from wein.plus is one such source. When researching for my articles, I regularly consult the wein.plus encyclopaedia. There I get reliable and detailed information.
Thomas Götz
Weinberater, Weinblogger und Journalist; Schwendi