The word partitive is used to show that only a part of a whole or a piece of something is referred to. An uncountable noun can be made countable by using a partitive. For example, cheese is uncountable. Cheese cannot be counted as one cheese or two cheeses. But it can be made countable by using a partitive word such as a chunk or a slice of cheese.
Each of the following links shows a list of partitives such as a drop of paint, a plot of land, a slice of bread, etc. Referring to a part of a whole, a partitive can very well be more than one part; for example, drops of paint, plots of land, slices of bread, or even some of the oranges. A basket of oranges is a whole and the partitive some is just a part of the whole.
The partitives in this list (List 2) include other expressions such as release of emotions, examples of which are a fit of jealousy, an outburst of anger, and a twinge of sadness, which may not be termed partitives. The partitives are not separated into categories but are all lumped into one full list for easy reference.
Click to see examples: