noun🔗Share置換基Any atom, group, or radical substituted for another, or entering a molecule in place of some other part which is removed"In organic chemistry, different substituents, such as hydroxyl groups or methyl groups, can change the properties of a benzene ring. "有機化学では、ヒドロキシル基やメチル基などの様々な置換基がベンゼン環の性質を変えることができます。chemistrycompoundsubstancebiochemistryChat with AIVocabulary GamePractice Reading
noun🔗Share代用形(grammar) pro-form"In the sentence "Sarah likes cats, and David likes them too," the word "them" is a substituent that replaces "cats" to avoid repetition. "「サラは猫が好きで、デビッドも好きです」という文では、「them（それら）」は繰り返しを避けるために「cats（猫）」を置き換える代用形です。grammarlinguisticslanguageChat with AIVocabulary GamePractice Reading
