1. (of animals that have several estrous cycles in one breeding season) in a period of sexual inactivity
   - diestrous, diestrual, dioestrual

See also: anestrous

• army unit
• armyworm
• Arna Wendell Bontemps
• ARNG
• Arnhem
• arnica
• arnica bud
• Arnica cordifolia
• Arnica montana
• Arno
• Arno River
• Arnold
• Arnold Daniel Palmer
• Arnold Gesell
• Arnold Joseph Toynbee
• Arnold Lucius Gesell
• Arnold of Brescia
• Arnold Palmer
• Arnold Schoenberg
• Arnold Schönberg
• Arnold Toynbee
• Arnold-Chiari deformity
• Arnoseris
• Arnoseris minima
• aroeira blanca