Plural of fetation; multiple instances or cases of fetal development or pregnancy periods.
Fetation + -s (plural marker). Simple plural formation from the singular fetation, following standard English pluralization rules.
While grammatically valid, this plural form is rarely used because we don't typically talk about 'multiple fetations' in everyday language—pregnancies are usually discussed individually. This shows how some words have correct plurals that still feel awkward or unnecessary in actual use.
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