Definition

1. Noun:
   • An unborn or unhatched vertebrate in the later stages of development: A "foetus" is a developing mammal or other vertebrate after the embryonic stage, when it has recognizable features of its species.

Usage

• The word "foetus" is a standard noun used in biological and medical contexts.
• It refers specifically to a later developmental stage, following the embryonic stage.
• It is commonly used when discussing pregnancy, development, and healthcare.

Examples

• Noun:
  • The ultrasound scan showed a healthy foetus.
  • Researchers studied the development of the foetus in the third trimester.
  • The law protects the rights of the foetus.

Advanced Usage

• "Foetal" (adjective): Pertaining to a foetus.
  • Foetal development is a critical period.
  • The doctor monitored foetal heart rate.

Variants and Related Words

• Fetus: The most common alternate spelling, especially in American English. "Foetus" is more common in British English.
  • The terms "fetus" and "foetus" are often used interchangeably.
• Embryo: An earlier stage of development before the features are fully recognizable.
• Zygote: The initial cell formed when a sperm fertilizes an egg.

Synonyms

• Unborn child: A common term used in general and legal contexts.
• Developing young: A more general biological term.

Notes on Meaning

• The primary meaning is biological, referring to a specific prenatal stage.
• The term can have legal, ethical, and social implications in discussions about pregnancy and personhood.

Noun

1. an unborn or unhatched vertebrate in the later stages of development showing the main recognizable features of the mature animal