noun
homologous series
Chemistry term for a series of compounds with the same functional group and similar chemical properties, differing by a repeating unit such as CH₂.
アルカンはメタンから始まる同族列を形成する。
Alkanes form a homologous series starting with methane.
Compound of 同族 (dōzoku, 'same family') and 列 (retsu, 'series'). The term is a direct translation of the English 'homologous series' used in chemistry.