Definition

1. Noun:
   • The narrow, neck-like lower part of the uterus that connects to the vagina. This is the primary anatomical meaning in human and mammalian biology.
   • The part of the body connecting the head to the torso; the neck. This is a less common but valid anatomical term for this structure.

Usage

• The term 'cervix' is most frequently used in medical, biological, and anatomical contexts to refer specifically to the uterine cervix.
• When used to mean "neck," it is formal and technical, often found in older or very precise scientific descriptions.

Examples

• Referring to the uterus:
  • During a Pap smear, cells are collected from the cervix to screen for abnormalities.
  • The opening of the cervix dilates during childbirth.
• Referring to the neck (less common):
  • The injury was to the cervix or spinal column. (This usage is rare in everyday English).

Advanced Usage

• "Cervical": The related adjective. It is crucial to specify the context as it can refer to two different areas.
  • Cervical cancer refers to cancer of the uterine cervix.
  • Cervical vertebrae are the bones in the neck region of the spine.
• "Ectocervix" and "Endocervix": Specific terms for the outer and inner parts of the uterine cervix, respectively.

Variants and Related Words

• Cervical (adjective): Pertaining to either the neck or the uterine cervix.
• Cervicitis (noun): Inflammation of the uterine cervix.
• Endocervical (adjective): Relating to the endocervix (the inner canal of the cervix).

Synonyms

• For the uterine cervix: Cervical os, neck of the womb (clinical).
• For the neck: Neck, cervical region (anatomical).

Notes on Meaning

• In contemporary English, the default meaning of 'cervix' is the uterine cervix. If referring to the anatomical neck, the simple term "neck" is almost always used instead to avoid ambiguity.
• The example "the horse won by a neck" exclusively uses the word "neck" and would never be phrased using "cervix." This illustrates the clear distinction in common usage.

Noun

1. necklike opening to the uterus
2. the part of an organism (human or animal) that connects the head to the rest of the body
   • he admired her long graceful neck
   • the horse won by a neck