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

See also: anestrous, diestrum

• Acinos arvensis
• acinose
• acinous
• acinus
• Acipenser
• Acipenser huso
• Acipenser transmontanus
• Acipenseridae
• ack-ack
• ack-ack gun
• ackee
• acknowledge
• acknowledgeable
• acknowledged
• acknowledgement
• acknowledgment
• ACLANT
• aclinic line
• acme
• acne
• acne rosacea
• acne vulgaris
• acned
• acneiform
• Acnidosporidia