Media singular or plural
Over time, the word agenda has shed all signs of its "plural" past. In modern English, it is treated as a singular word. It has the plural form agendas. For example:
- The agenda is on the second page.
- All the agendas are displayed on the screen.
- My father taught me how to be a man and not by instilling in me a sense of machismo or an agenda of dominance. He taught me that a real man doesnt take, he gives; he doesnt use force, he uses logic; doesnt play the role of trouble-maker, but rather, trouble-shooter; and most importantly, a real man is defined by whats in his heart, not his pants. (Kevin Smith).
Data is the plural of datum. In the past (and still in the occasional scientific institution), data was treated as plural. For example:
- My data were corrupted. (outdated)
- The data are collated by the researchers. (outdated)
- My data is corrupted.
- The data is collated by the researchers.
Criteria is the plural form of the word criterion. As the word criterion is still in common use, criteria has retained its plural status far more than data and agenda. That said, it is still common to see criteria treated as a singular word both in speech and writing. Here's the dynamic:
- Her criteria is very clear. It has to be black.
(This is acceptable, but it might annoy some of your readers who would prefer the version below.)
- Her criteria are very clear. It has to be black.
(This is acceptable, but it sounds unnatural. It also runs a risk of sounding pretentious.)
- Her criterion is very clear. It has to be black.
(This is correct, but it also runs a slight risk of sounding pretentious.)
- are the criteria available to read? What is the main criterion?
As the word media comes from the Latin plural of medium, lots of your readers will expect you to treat media as a plural noun. However, even though media can be treated as a plural noun, its derivation (i.e., being the plural of medium) is only part of the reason why media can be treated as plural.
The word media can be treated as a singular word or a plural word. This is because it is a collective noun (just like the words team and jury). Example: