This is the 1576th most frequent Turkish word.
maddesi
"Substance" or "article" (depending on context).
In this sentence, 'maddesi' refers to an 'article' or 'clause' in a text.
Bu kitabın birinci maddesi çok önemlidir.
The first article of this book is very important.
Here, 'maddesi' describes the main constituent or 'ingredient' of something.
Çikolatanın ana maddesi kakaodur.
The main ingredient of chocolate is cocoa.
In this context, 'maddesi' again refers to an 'article' or 'clause,' specifically within a legal contract.