1. Having no placenta
   "monotremes and marsupials are aplacental mammals"

Antonym: placental

• poor man's pulse
• poor man's weatherglass
• poor people
• poor person
• poor rates
• poor speller
• poor white trash
• poor-spirited
• poorhouse
• poori
• poorly
• poorness
• poorwill
• Pooterish
• pootle
• poove
• pop
• Pop Art
• pop bottle
• pop group
• pop in
• pop music
• pop off
• pop one's clogs
• pop out