reagent
Meaning: A substance used to bring about a chemical reaction, especially one employed in analysis and testing to detect or measure another substance.
In laboratory chemistry, a reagent is any compound introduced into a system to produce a chemical reaction. The term is particularly common in analytical chemistry, where reagents are used in titrations, assays, and diagnostic tests. Reagent-grade chemicals meet strict purity standards. In molecular biology, the word extends to enzymes, buffers, and primers used in procedures such as PCR. The plural 'reagents' frequently collocates with 'laboratory,' 'chemical,' and 'diagnostic.'
Examples
- The laboratory technician prepared the reagent solution according to the protocol specified in the British Pharmacopoeia. 实验室技术员按照《英国药典》中规定的方案配制了试剂溶液。La técnica de laboratorio preparó la disolución del reactivo según el protocolo especificado en la Farmacopea Británica.検査技師は英国薬局方に定められたプロトコルに従って試薬溶液を調製した。검사 기사는 영국 약전에 명시된 프로토콜에 따라 시약 용액을 조제했다.
- A global shortage of testing reagents hampered the NHS's ability to process diagnostic samples during the outbreak. 全球检测试剂短缺阻碍了NHS在疫情期间处理诊断样本的能力。La escasez mundial de reactivos de diagnóstico obstaculizó la capacidad del NHS para procesar muestras durante el brote.検査試薬の世界的な不足により、感染症流行時にNHSの診断検体処理能力が妨げられた。검사 시약의 세계적인 부족으로 인해 감염병 유행 시기에 NHS의 진단 검체 처리 능력이 저해되었다.
- The Grignard reagent is a cornerstone of organic synthesis, enabling the formation of new carbon-carbon bonds. 格氏试剂是有机合成的基石,可实现新碳-碳键的形成。El reactivo de Grignard es una piedra angular de la síntesis orgánica que permite la formación de nuevos enlaces carbono-carbono.グリニャール試薬は有機合成の礎石であり、新たな炭素-炭素結合の形成を可能にします。그리냐르 시약은 유기 합성의 초석으로, 새로운 탄소-탄소 결합의 형성을 가능하게 합니다.
Pronunciation
Usage Guide
Context: academic, professional
Tone: neutral
Origin & History
From Medieval Latin reagens (reacting), present participle of reagere (to react), from re- (back, again) and agere (to do, act). Entered English in the 18th century.
Cultural Context
Era: Modern
Generation: All ages
Social background: Universal
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