Definition

1. Adjective:
   • Relating to anestrus: Describes the physiological state or period in the reproductive cycle of female mammals when they are not in heat (estrus) and are not sexually receptive.

Usage Examples

• Adjective:
  • The veterinarian confirmed the mare was in an anoestrous phase.
  • Anoestrous periods are a normal part of the seasonal breeding cycle in many species.

Advanced Usage

• Scientific/Technical Context: The term is primarily used in veterinary science, animal physiology, and zoology to describe the non-receptive phase of the estrous cycle.
  • The study focused on hormonal triggers that terminate the anoestrous state.

Variants and Related Words

• Anestrus (Anoestrus) (n): The period of sexual inactivity between estrous cycles.
  • The animal enters anestrus during the winter months.
• Anestrous (alternative spelling): A common variant spelling of "anoestrous".
• Polyestrous (adj): Having multiple estrous cycles in a breeding season. (Contrasting term)
• Diestrus (n): A specific phase within the cycle following estrus, characterized by progesterone dominance and sexual non-receptivity; often overlaps with or is part of anestrus.

Synonyms

• Non-estrous: Not in estrus.
• Sexually quiescent: In a state of sexual inactivity.

Related Phrases

• In anoestrus: The state of being in the anoestrous phase.
  • The females remain in anoestrus until environmental conditions improve.

Notes on Meaning

• The term specifically relates to the biological cycle (estrous cycle) in non-primate mammals. The equivalent period in primates (including humans) is part of the menstrual cycle and is not typically described using this term.
• The spelling "anoestrous" is common in British English, while "anestrous" is more frequent in American English.

Adjective

1. of or relating to anestrus