Meaning of self-coincidence in English:

self-coincidence

Pronunciation /ˌsɛlfkəʊˈɪnsɪd(ə)ns/

noun

  • 1Geometry
    In a geometric figure: the fact or state of coinciding exactly with its former position and orientation following displacement, especially by rotation or reflection.

  • 2Crystallography
    In a crystalline structure: the state of appearing unchanged in orientation following displacement.

Origin

Early 20th century. From self- + coincidence.