noun, noun, used as a suffix
Broadly refers to an organized set of related things, a family line, or a group sharing a common characteristic. Often used as a suffix to indicate a category or type.
太陽系には8つの惑星がある。
There are eight planets in the solar system.
彼は音楽家の系に生まれた。
He was born into a lineage of musicians.
This restaurant has a wide variety of Japanese-style dishes.
noun
corollary
Mathematical term for a proposition that follows directly from a proved theorem.
この定理の系として、次の結果が得られる。
As a corollary of this theorem, we obtain the following result.
noun, noun, used as a suffix
geological system
In geology, a system is a range of strata corresponding to a particular time period, e.g., the Jurassic system.
白亜系の地層から化石が発見された。
Fossils were discovered in the Cretaceous system strata.
noun, noun, used as a suffix
taxonomic series
In taxonomy, a series is a rank below section and above species, used in botanical classification.
この植物は○○系に分類される。
This plant is classified in the ○○ series.