Technology / Email / Challenge Response: Method of approving senders to specific email addresses that asks the email sender to answer a question proving he is a real person and not a 'spam cannon' attempting to send email. Primarily used by Earthlink and selected client-side filters.
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Challenge Verb Synonyms: question, dispute, defy, object to, take exception to, contest, doubt, call into doubt, call into or to question, impugn
Challenge Noun Synonyms: question, dispute, doubt
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Response Noun Synonyms: answer, reply, retort, rejoinder, reaction, effect, feedback, return, comeback
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Science / Biology / Inflammatory Response: The bodys reaction to invading infectious microorganisms; includes an increase in blood fiow to the affected area, the release of chemicals that draw white blood cells, an increased fiow of plasma, an MORE
Business / Finance / Lag Response Of Prepayments: A delay of typically about three months between the time the weighted-average coupon of an MBS pool crosses the threshold for refinancing and observation of an acceleration in prepayment speed is obse MORE
Technology / Home Audio / Frequency Response: The range of frequencies that a speaker will reproduce (lowest frequency to the highest). While the optimal normal is 20 - 20,000 Hz (Hertz), the range of human hearing for individuals is often much m MORE
Technology / Home Audio / Flat Response: An output signal in which fundamental frequencies and harmonics are in the same proportion as those of the input signal being amplified. A flat frequency response would exhibit relatively equal respon MORE
Health / First Aid / Fight Or Flight Response: Fight or flight refers to the two choices our ancestors had when facing a dangerous animal or enemy. MORE
Technology / Home Audio / Linear Phase Response: Any system which accurately preserves phase relationships between frequencies. MORE