tandem
意味
- 前後一列に;
- 縦並びの,前後に座席のある
- 縦につないだ2頭の馬;縦列2頭立ての馬車
- 二人乗り自転車
語源
英語の原文（Wiktionary）
PIE word *téh₂m The noun is borrowed from Latin tandem (“of time: at last, at length, finally”), applied humorously in English to two horses harnessed “at length” (that is, in a single line) instead of side-by-side. Tandem is derived from tam (“so, to such an extent”) + -dem (demonstrative suffix). The adjective, adverb, and verb are derived from the noun.