c.b.d.o.

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Polish[edit]

Pronunciation[edit]

  • IPA(key): /ˌt͡sɛ ˌbɛ ˌdɛ ˈɔ/

Phrase[edit]

c.b.d.o.

  1. Abbreviation of co było do okazania; QED (end of proof)

Further reading[edit]