challenge

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Related to Challengers: Challengers of the Unknown

challenge

1. US an assertion that a person is not entitled to vote or that a vote is invalid
2. Law a formal objection to a person selected to serve on a jury (challenge to the polls) or to the whole body of jurors (challenge to the array)

challenge

[′chal·ənj]
(communications)
To cause an interrogator to transmit a signal which puts a transponder into operation.
(immunology)
Administration of an antigen to ascertain state of immunity.
References in classic literature ?
With the eyes of an immense concourse of spectators fixed upon them, the five knights advanced up the platform upon which the tents of the challengers stood, and there separating themselves, each touched slightly, and with the reverse of his lance, the shield of the antagonist to whom he wished to oppose himself.
Having intimated their more pacific purpose, the champions retreated to the extremity of the lists, where they remained drawn up in a line; while the challengers, sallying each from his pavilion, mounted their horses, and, headed by Brian de Bois-Guilbert, descended from the platform, and opposed themselves individually to the knights who had touched their respective shields.
At the flourish of clarions and trumpets, they started out against each other at full gallop; and such was the superior dexterity or good fortune of the challengers, that those opposed to Bois-Guilbert, Malvoisin, and Front-de-B
This politic selection did not alter the fortune of the field, the challengers were still successful: one of their antagonists was overthrown, and both the others failed in the attaint,* that is,
After this fourth encounter, there was a considerable pause; nor did it appear that any one was very desirous of renewing the contest The spectators murmured among themselves; for, among the challengers, Malvoisin and Front-de-B
But none shared the general feeling of dissatisfaction so keenly as Cedric the Saxon, who saw, in each advantage gained by the Norman challengers, a repeated triumph over the honour of England.
Anyhow, it's good enough for you to interview Challenger upon.
Friend Challenger is a clever man," said he with great vehemence.
You had a scrap once before with old man Challenger," said he sternly, "and you were down and out inside ten seconds.
grass when you get near Challenger, for this young fellah and I have a bit of a weakness for the old dear.
Challenger has filled you with his nonsense and you are both incapable of reason.
Lord John was still struggling with his buffalo story, so far as I could make out, while once again I heard, as of old, the deep rumble of Challenger and the insistent accents of Summerlee as their brains locked in high and fierce scientific debate.