The word "transgenerational" is a modern scientific and sociological compound built from classical elements. Its core is the Latin prefix "trans-," meaning across, which has been used for centuries to denote crossing boundaries. This is attached to "generation," a term rooted in the Latin "genus" (birth, race), which traces back to the Proto-Indo-European root gene- meaning "to give birth, beget." The final suffix "-al" converts the noun into an adjective. Thus, the literal construction "across generations" directly and logically yields its contemporary meaning, describing phenomena—such as trauma, wealth, or cultural traits—that persist or are transferred from one generation to the next.

Structure: trans (across) + generation (generation) + al (adjective suffix) - trans: Latin origin, meaning "across, beyond, through." A prefix indicating movement or extension from one state or place to another. - generation: From Latin generatio (a begetting, producing), itself from generare (to beget, produce). The core morpheme is "gen" (birth, race, kind) with the suffix "-ation" forming a noun of action or state. - al: Latin adjectival suffix -alis, indicating "of, relating to, or characterized by."