square of opposition
noun phrase
: a square figure on which may be demonstrated the logical relationships of contraries, contradictories, subcontraries, and subalterns and superalterns
Word History
First Known Use
1864, in the meaning defined above
- perfect engine
- perfect flower
- perfect form
- perfect fungus
- perfect game
- perfect gas
- perfect induction
- perfect number
- perfect participle
- perfect pitch
- perfect radiator
- perfect ream
- perfect score
- perfect square
- perfect storm
- perfect tense
- perfect usufruct
- perfect year
- perfect-bound
- perfecta
- perfectabilities
- perfectability
- perfectabilityes
- perfectabilitys
- perfectable