alt Hacker News>On the first clause, exactly. (The second clause appears to be a bit of ad lib.)
The original definition of martyr is: "a person who voluntarily suffers death as the penalty for declaring belief in and refusing to renounce a religion"[1].
It's suffering for the sake of being true to one's faith; impact of that decision on anyone else not being a factor in whether one is a martyr.
Abstaining from meat consumption when it's something you really enjoy is martyrdom in that sense: you are sticking to your moral principles while having no impact on the proliferation of unethical farming.
>I don't think the concept of 'martyrdom' encompasses self-interest
You think incorrectly. The concept of martyrdom means forgoing the self-interest of self-preservation and not being in pain. There's no martyrdom without sacrifice.
>It does however consider the cause/s of other beings.
It may, in the modern sense of the word, but it doesn't have to. See the linked definition. The causes for which one martyrs themselves may vary. The unifying factor is suffering in the name of the cause.
Not suffering with the effect of making something happen. It's choosing to suffer in the name of something that makes one a martyr.
Martyrdom is not an efficient way to bring the cause closer to reality.
> So I maintain, not a very cognitively consonant use of the term.
You can maintain it's not the correct usage of the term, dictionaries be damned, but cognitive consonance has nothing to do with that.