出典:Wiktionary
出典:『Wiktionary』 (2025/10/12 21:35 UTC 版)
foetus (plural foetuses or foetus or (hypercorrect) foeti)
The form fetus is the primary spelling in the United States, Canada, Australia and in the scientific community, whereas foetus is still commonly used in the United Kingdom and some other Commonwealth nations. Sometimes considered less correct than fetus and suggested to be abandoned.
Introduced after 600 C.E. by Isidorus (c. 560–636 C.E.), who wrote “Etymologies”, much of which was erroneous, partly because his Latin was, as described, “not pure”, and appears to have been misled by the Ancient Greek φοιτός (phoitós), itself a later corruption of φυτός (phutós, “fertile”).
foetus (feminine foeta, neuter foetum); first/second-declension adjective
First/second-declension adjective.
| singular | plural | ||||||
|---|---|---|---|---|---|---|---|
| masculine | feminine | neuter | masculine | feminine | neuter | ||
| nominative | foetus | foeta | foetum | foetī | foetae | foeta | |
| genitive | foetī | foetae | foetī | foetōrum | foetārum | foetōrum | |
| dative | foetō | foetae | foetō | foetīs | |||
| accusative | foetum | foetam | foetum | foetōs | foetās | foeta | |
| ablative | foetō | foetā | foetō | foetīs | |||
| vocative | foete | foeta | foetum | foetī | foetae | foeta | |
foetus m (genitive foetūs); fourth declension
Fourth-declension noun.
| singular | plural | |
|---|---|---|
| nominative | foetus | foetūs |
| genitive | foetūs | foetuum |
| dative | foetuī | foetibus |
| accusative | foetum | foetūs |
| ablative | foetū | foetibus |
| vocative | foetus | foetūs |
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