An acid-base indicator which is colorless in acid solution, but turns pink to red as the solution becomes alkaline. It is used medicinally as a cathartic.
Tergiversation
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The act of tergiversating; a shifting; shift;
subterfuge; evasion.
Tergiversation meaning & definition 1 of Tergiversation.
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To continue ambiguously arguing your point even though you know you are incorrect (i.e. flat out wrong) and your opponent has even shown this in great detail (but you are somewhat sure the audience cant tell the difference). This is a great time to practice [strawman arguments] or simply let loose a [deluge] of ad hominem attacks.
Internet chat and bulletin boards have been excellent breeding grounds for [tergiversation] as people no longer have to worry about losing their integrity to such displays and the intelligence of the audience is completely ambiguous.
Randroids, in particular, are quite familiar with the technique and it is the main argumentative tool use to rationalize her many political and philosophical contradictions.
[Tergiversation] is a five star trolling technique if you maintain even a slightly above average vocabulary.Tergiversation meaning & definition 2 of Tergiversation.