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PLETHYSMOGRAPH
plethysmograph
(noun) a measuring instrument for measuring changes in volume of a part or organ or whole body (usually resulting from fluctuations in the amount of blood it contains)
Source: WordNet® 3.1
Etymology
Late 19th century: from Greek plÄthusmos âenlargementâ (based on plÄthus âfullnessâ) + -graph.
Noun
plethysmograph (plural plethysmographs)
(medicine) An instrument for measuring changes in volume within an organ or whole body (usually via fluctuations in the amount of fluid it contains).
Source: Wiktionary
Pleth"ys*mo*graph, n. Etym: [Gr. -graph.] (Physiol.)
Definition: An instrument for determining and registering the variations in the size or volume of a limb, as the arm or leg, and hence the variations in the amount of blood in the limb.
– Pleth`ys*mo*graph"ic, a.
Source: Webster’s Unabridged Dictionary 1913 Edition
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19 June 2025
ROOTS
(noun) the condition of belonging to a particular place or group by virtue of social or ethnic or cultural lineage; âhis roots in Texas go back a long wayâ; âhe went back to Sweden to search for his rootsâ; âhis music has African rootsâ
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