triassic
三畳紀
解説 Definition
triassic は地質時代の一つである三畳紀を指します。ペルム紀の後、ジュラ紀の前にあたる時代で、恐竜が現れ始めた時期として知られます。
The geological period between the Permian and Jurassic periods, forming the earliest part of the Mesozoic Era. It began after a major mass extinction and includes the time when the first dinosaurs and early mammals appeared; the name is normally capitalized.
覚え方のコツ Memory Tip
通常は Triassic と大文字で書き、tri-「3」を手掛かりに、命名の基になった三つの地層区分を思い出します。地質年代の並びは Permian → Triassic → Jurassic。the Triassic period、during the Triassic の形で使い、初期の恐竜が現れた時代として位置を固定すると覚えやすいでしょう。triangle の tri- とも同じ「三」の連想が使えます。
Use tri-, “three,” as the key to Triassic: the period was named from a three-part sequence of rock formations recognized in Germany. Fix its place with the order Permian, Triassic, Jurassic. This timeline prevents confusion with the later Jurassic, which is more strongly associated in popular culture with dinosaurs. Useful patterns are the Triassic period, during the Triassic, and Triassic rocks. English normally capitalizes the formal geological name. You can also connect tri- with familiar words such as triangle and triad, while remembering that Triassic itself names one specific period, not simply anything divided into three.
例文
The triassic period began long before the Jurassic period.
三畳紀はジュラ紀よりずっと前に始まりました。
Some early dinosaurs lived during the triassic period.
初期の恐竜の一部は三畳紀に生きていました。
The museum display explains climate changes in the triassic period.
博物館の展示は三畳紀の気候変動を説明しています。
triassic の類義語・関連語
triassic の語源・成り立ち Etymology
ラテン語「trias（三つ組）」＋接尾辞-icに由来。ドイツの地質学者アルベルティが、この時代の地層が三層に大別されることから1834年に命名。関連語：triad（三つ組）、triangle（三角形）。tri-は「3」を意味する印欧語根。
Triassic was formed from German Trias, “triad” or “group of three,” with the adjectival suffix -ic. The German geologist Friedrich August von Alberti introduced the geological term in 1834 for three major rock divisions recognized in Germany. Trias ultimately comes from Greek trias, “a group of three.” The English term became the formal name for the geological period between the Permian and Jurassic, conventionally written with a capital T.
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