Definition of cachinnation in English:

cachinnation

noun

rare
  • See cachinnate

    • ‘‘Come now, be serious little boy,’ Christy simpered to me, slightly breathless after her cachinnation.’
    • ‘The eldest of the trio, a paunched and jowled dignitary whose beard and hair were obviously touched up in a none-too-successful effort to belie his more than three score years, glared in distaste at the scene of action unfolding while the cachinnations of the general audience grew in volume.’
    • ‘Even someone remarking in polite company about somebody who ‘had one of the longest beards I've ever seen’ is given a suggestive pause after longest, eliciting obscene cachinnations from the groundlings.’
    • ‘That at the ripe old age of a quarter-century the play still crackles with cachinnation (note the k's!) is a hopeful sign.’
    • ‘Instead, however, of their laughter lessening, the cachinnations became so violent that I began to feel seriously alarmed.’

Pronunciation

cachinnation

/kakɪˈneɪʃ(ə)n/