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antireflexive

American  
[an-tee-ri-flek-siv, an-tahy-] / ˌæn ti rɪˈflɛk sɪv, ˌæn taɪ- /

adjective

Mathematics.
  1. noting a relation in which no element is in relation to itself, as “less than.”


Etymology

Origin of antireflexive

anti- + reflexive