The plural form of dermis is dermises.
The plural form of adipocyte is adipocytes
esophagogastroduodenoscopies is the plural form
The plural form of caboose is cabooses.
Slang is a collective term. It has no plural form.
The plural form for stimulus is stimuli.
The plural form for the noun verruca is verrucae.
The plural of stoma is stomata.
Bananen ("bananas") is already plural. It is the plural form of Banane ("banana").
the singular term is TRIVIUM. Trivia is already in plural form
plural-singular nouns
The plural form of the noun artist is artists.The plural possessive form is artists' materials.
Mitochondria is already plural. The singular form is Mitochondrion.Mitochondria IS plural. The single form is mitochondrion.