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"Opa" exclaimed by a waiter in a Greek restaurant in Chicago while lighting saganaki on fire. Opa (Greek: ώπα) is a common Mediterranean, Eastern European, Middle Eastern, North African, South Asian, Latin American, and Hebrew emotional expression. It is frequently used during celebrations such as weddings or traditional dancing. [1]
An oropharyngeal airway (also known as an oral airway, OPA or Guedel pattern airway) is a medical device called an airway adjunct used in airway management to maintain or open a patient's airway. It does this by preventing the tongue from covering the epiglottis, which could prevent the person from breathing. When a person becomes unconscious ...
Phthalaldehyde (sometimes also o-phthalaldehyde or ortho-phthalaldehyde, OPA) is the chemical compound with the formula C 6 H 4 (CHO) 2. It is one of three isomers of benzene dicarbaldehyde , related to phthalic acid .
OPA Co., Ltd. (Oriental Park Avenue), a Japanese clothing retail chain and subsidiary of Daiei Ordre des Palmes Academiques , an Order of Chivalry of France for academics and cultural and educational figures
The Office of Price Administration (OPA) was established within the Office for Emergency Management of the United States government by Executive Order 8875 on August 28, 1941. The functions of the OPA were originally to control money ( price controls ) and rents after the outbreak of World War II .
Oracle Intelligent Advisor (OIA), formerly known as Oracle Policy Automation (OPA), is a suite of decision automation software products used for modeling and deploying business rules within the enterprise. Oracle Corporation acquired OPA in December 2008 when it purchased an Australian software company named RuleBurst Holdings, then trading as ...
Delta Air Lines has revealed information about the crew on board a flight from Minneapolis that crashed and flipped upside down at Toronto Pearson International Airport on Monday. Officials say ...
An optical parametric amplifier, abbreviated OPA, is a laser light source that emits light of variable wavelengths by an optical parametric amplification process. It is essentially the same as an optical parametric oscillator , but without the optical cavity (i.e., the light beams pass through the apparatus just once or twice, rather than many ...