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Re:Analysis of suspected MH370 pings recorded by Ocean Shield by fit2rule on Thursday April 10, 2014 @04:49AM (#7564897)
> To ping means to send out a signal in expectation of maybe receiving an echo or reply. It's a two-way process.

"Ping" is an Onomatopoeia. There is no distinction about whether or not you are supposed to get a response or acknowledgement in the definition of this word - this is your own view of the definition, perhaps biased by years of working with computers, but in the acoustic world a 'pinger' is just something that 'goes ping'.

>I find it annoying that the media call this thing a "pinger".

I find it annoying when people assume their definitions of words they use are the only 'right ones'. Use a dictionary - you'll see the definition right there:

    pinger  (ˈpɪŋə) 
 
    — n
    a device that makes a pinging sound, esp one that can 
    be preset to ring at a particular time

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