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Flag: gbEnglishMerriam-Webster Dictionary

rue'>, ˌa-sə-tə-

Definition

  • a crystalline compound C8H9NO2 that is a hydroxy derivative of acetanilide and is used in chemical synthesis and in medicine to relieve pain and fever
First Known Use
1958, in the meaning defined above
History and Etymology
acet(yl) + amino + phen(ol)

NOTE: Shortened from N-acetyl-p-aminophenol. Acetaminophen was introduced as a generic name roughly coincident with the introduction of the trademark preparation Tylenol, which was first marketed as "Children's Tylenol Elixir" in 1955 by McNeil Laboratories. Synthesis of the substance, as acetylamidophenol, was first reported in Berichte der Deutschen Chemischen Gesellschaft, 11. Jahrgang (Jan.-Juni, 1878), p. 232-33 (H. N. Morse, "Ueber eine neue Darstellungsmethode der Acetylamidophenole"). Its antipyretic properties were recognized by the German physician Josef von Mering in the 1893 article "Beiträge zur Kenntniss der Antipyretica" (Therapeutische Monatshefte, 7, pp. 577-87)—he also refers to it as acetylamidophenol.

cru​cial
adjective
cru·​cial
ˈkrü-shəl

Definition

  • important, significant //… what use we make of them will be the crucial question. — Stanley Kubrick //Vitamins are crucial for maintaining good health.
    important or essential as resolving a crisis decisive //She played a crucial role in the negotiations.
    marked by final determination of a doubtful issue //the crucial game of a series
  • archaic cruciform
Synonyms & Antonyms
Synonyms
critical key pivotal vital
Examples
  • //Vitamins are crucial for maintaining good health.
  • //It's crucial that we arrive before 8 o'clock.
  • //Teachers are crucial to the success of the school.
  • //She played a crucial role in the meeting.
First Known Use
1706, in the meaning defined at sense 2
History and Etymology
French, from Latin cruc-, crux cross
<
rue'>, ˌa-sə-tə-

Definition

  • a crystalline compound C8H9NO2 that is a hydroxy derivative of acetanilide and is used in chemical synthesis and in medicine to relieve pain and fever
First Known Use
1958, in the meaning defined above
History and Etymology
acet(yl) + amino + phen(ol)

NOTE: Shortened from N-acetyl-p-aminophenol. Acetaminophen was introduced as a generic name roughly coincident with the introduction of the trademark preparation Tylenol, which was first marketed as "Children's Tylenol Elixir" in 1955 by McNeil Laboratories. Synthesis of the substance, as acetylamidophenol, was first reported in Berichte der Deutschen Chemischen Gesellschaft, 11. Jahrgang (Jan.-Juni, 1878), p. 232-33 (H. N. Morse, "Ueber eine neue Darstellungsmethode der Acetylamidophenole"). Its antipyretic properties were recognized by the German physician Josef von Mering in the 1893 article "Beiträge zur Kenntniss der Antipyretica" (Therapeutische Monatshefte, 7, pp. 577-87)—he also refers to it as acetylamidophenol.

cru​cial
adjective
cru·​cial
ˈkrü-shəl

Definition

  • important, significant //… what use we make of them will be the crucial question. — Stanley Kubrick //Vitamins are crucial for maintaining good health.
    important or essential as resolving a crisis decisive //She played a crucial role in the negotiations.
    marked by final determination of a doubtful issue //the crucial game of a series
  • archaic cruciform
Synonyms & Antonyms
Synonyms
critical key pivotal vital
Examples
  • //Vitamins are crucial for maintaining good health.
  • //It's crucial that we arrive before 8 o'clock.
  • //Teachers are crucial to the success of the school.
  • //She played a crucial role in the meeting.
First Known Use
1706, in the meaning defined at sense 2
History and Etymology
French, from Latin cruc-, crux cross
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