plural form of synopsis?
"Daffodils" is the plural of "daffodil."
The plural form for the noun sir is sirs.
The plural form of the word zero is zeroes, like "There are a lot of zeroes in that number."
The word "police" is plural and it takes a plural verb.
The plural of diagnosis is diagnoses.
The plural form of diagnosis is diagnoses.
The plural form for the noun diagnosis is diagnoses; the plural possessive is diagnoses'.
diagnosesThe plural form of diagnosis is diagnoses. It is pronounced dye-egg-no-seas.
Diagnoses is the plural form. Diagnosis is the singular form.
The singular's diagnosis, the plural diagnoses.
Diagnoses
You seem to have the singular and the plural lumped into one word. The singular is diagnosis; the plural is diagnoses. They are the singular and plural forms of a common, abstract noun.
Diagnoses is the plural of diagnosis
The plural form for the demonstrative pronoun this is these.
The plural form of the word "inferno" is "infernos."
The plural form of the word "ranch" is "ranches."