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  • IPA(key): /ˈtɾweno/, [ˈt̪ɾ]
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Etymology 1[edit]

From Latin tonus (thunderclap; sound, tone), possibly through a Late Latin or Vulgar Latin *tronus, incremented with an -r- due to influence from *tronitus < tonitrus, and ultimately from Ancient Greek τόνος (tónos); alternatively a derivative of tronar. Compare Latin tro, Galician trono, Portuguese trom, Occitan tron, dialectal Italian trono, as well as English tune and tone. See also the possible doublet tono.


trueno m (plural truenos)

  1. a clap of thunder
Usage notes[edit]
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Etymology 2[edit]

Cognate with Catalan troana and French troène.


trueno m (plural truenos)

  1. (rare) privet
    Synonyms: aligustre, ligustro

Etymology 3[edit]



  1. First-person singular (yo) present indicative form of tronar.

Further reading[edit]