polygraph
(noun) a medical instrument that records several physiological processes simultaneously (e.g., pulse rate and blood pressure and respiration and perspiration)
Source: WordNet® 3.1
polygraph (plural polygraphs)
A device which measures and records several physiological variables such as blood pressure, heart rate, respiration and skin conductivity while a series of questions is being asked to a subject, in an attempt to detect lies.
Synonym: lie detector
(dated) A mechanical instrument for multiplying copies of a writing, resembling multiple pantographs.
Synonyms: manifold writer, autopen
(archaic) A collection of different works, either by one or several authors.
(linguistics) A group of letters that represent a single phoneme.
polygraph (third-person singular simple present polygraphs, present participle polygraphing, simple past and past participle polygraphed)
(transitive) To administer a polygraph test to.
Source: Wiktionary
Pol"y*graph, n. Etym: [Gr. polygraphe.]
1. An instrument for multiplying copies of a writing; a manifold writer; a copying machine.
2. In bibliography, a collection of different works, either by one or several authors. Brande & C.
Source: Webster’s Unabridged Dictionary 1913 Edition
12 June 2025
(noun) a decrease in the density of something; “a sound wave causes periodic rarefactions in its medium”
Coffee dates back to the 9th century. Goat herders in Ethiopia noticed their goats seem to be “dancing” after eating berries from a particular shrub. They reported it to the local monastery, and a monk made a drink out of it. The monk found out he felt energized and kept him awake at night. That’s how the first coffee drink was born.
