1. Having more than one period of estrus per year
   - polyestrous

See also: estrous

• nugatory
• nugget
• nuggety
• nuisance
• nuisance abatement
• nuisance tax
• nuisance value
• nuke
• null
• null and void
• null set
• null space
• nullah
• Nullarbor Plain
• nullification
• nullified
• nullifier
• nullify
• nullipara
• nulliparous
• nullity
• numb
• numbat
• number
• number 1