Homologue

Japanese: homologue
Homologue

…A series of compounds that have similar structural formulas and whose molecular formula increases by CH2 for each additional carbon atom in the carbon chain is called a homologous series. Compounds in a homologous series, such as methane CH4 and ethane C2H6 , and methyl alcohol CH3OH and ethyl alcohol C2H5OH , are said to be homologues. Compounds with fewer carbon atoms are sometimes called lower homologues, and those with more carbon atoms are sometimes called higher homologues. …

*Some terminology explanations that mention "homologue" are listed below.

Source | Heibonsha World Encyclopedia 2nd Edition | Information

Japanese:

…このように互いに類似した構造式をもち,炭素鎖の炭素原子が1個増加するごとに分子式がCH2だけ大きくなる一連の化合物の系列を同族列という。同族列中の化合物,たとえばメタンCH4とエタンC2H6,メチルアルコールCH3OHとエチルアルコールC2H5OHは,それぞれ互いに同族体homologueであるという。同族列の中で,炭素原子の数の少ないものを低級同族体,多いものを高級同族体と呼ぶことがある。…

※「homologue」について言及している用語解説の一部を掲載しています。

出典|株式会社平凡社世界大百科事典 第2版について | 情報

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