1. Capable of preventing conception or impregnation
   - contraceptive, prophylactic

See also: protective

• acanthopterygian
• Acanthopterygii
• Acanthoscelides
• Acanthoscelides obtectus
• adenosine monophosphate
• adenosine triphosphate
• adenosis
• Adenota
• Adenota vardoni
• adenovirus
• adenylic acid
• adept
• adeptly
• adeptness
• adequacy
• adequate
• adequate to
• adequately
• adequateness
• ader wax
• adermin
• adesite
• ADH
• ADHD
• adhere