1. Related to or along a diameter
   - diametral, diametrical 
2. Characterized by opposite extremes; completely opposed
   "in diametric contradiction to his claims"; "diametric points of view"
   - diametrical, opposite, polar

See also: diameter, diametrically, different

• adaptive radiation
• adaptor
• Adar
• Adar Sheni
• adaxial
• adaxially
• add
• add on
• add to
• add together
• add up
• add-in
• addable
• addax
• Addax nasomaculatus
• addend
• addendum
• adder
• adder's fern
• adder's tongue
• adder's tongue fern
• addible
• addict
• addicted
• addiction