diagnosis is singular diagnoses is plural sis = singular ses = plural
It is plural. The singular is diagnosis.
diagnosesThe plural form of diagnosis is diagnoses. It is pronounced dye-egg-no-seas.
Are is plural. "Is" is singular. For example, "There is a glove on the chair". That is singular. "There are gloves on the chair". That is plural.
Who may be singular or plural.
Atrium is singular - the plural is atria.
It is plural. The singular is diagnosis.
The singular's diagnosis, the plural diagnoses.
Diagnoses is the plural form. Diagnosis is the singular form.
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.
diagnosesThe plural form of diagnosis is diagnoses. It is pronounced dye-egg-no-seas.
The plural form of diagnosis is diagnoses.
practitioner is singular (plural practitioners)sofa is singular (plural sofas)satellite is singular (plural satellites)clips is plural (singular clip)dentist is singular (plural dentists)dollars is plural (singular dollar)article is singular (plural articles)magazines is plural (singular magazine)laminator is singular (laminators is plural)radios is plural (singular radio)
singular and plural
Singular: book / Plural: books Singular: cat / Plural: cats Singular: child / Plural: children Singular: foot / Plural: feet
Are is plural. "Is" is singular. For example, "There is a glove on the chair". That is singular. "There are gloves on the chair". That is plural.
"Has" is singular, e.g. He has, she has. "Have" is plural, e.g. They have, we have. The exception is "I" - e.g. I have.
The singular possessive form is diagnosis's.