noun
system; network; line of organization
Refers to a connected system or organized set of lines, channels, or components, as in 電気系統, 交通系統, or 連絡系統.
電気系統に異常があるかもしれない。
There may be a fault in the electrical system.
社内の連絡
We reviewed the internal lines of communication.
noun
lineage; ancestry; family line
Used for descent or a line of ancestry; often appears with expressions like 系統を引く, meaning to come from or inherit a particular line.
彼は古い武家の系統を引いている。
He descends from an old samurai family line.
noun
group; family; school; affiliation
Classifies things or people into a related family, category, party, or school of thought. Common with colors, languages, academic traditions, political tendencies, and similar groupings.
同じ系統の色でまとめると、部屋に統一感が出る。
If you use colors from the same family, the room will feel unified.
この思想は自由主義の系統に属する。
This idea belongs to the liberal school of thought.
noun
evolutionary relationship; phylogenetic closeness
Biological use for how closely organisms or species are related in evolutionary lineage.
この二つの種は系統が近い。
These two species are closely related evolutionarily.
noun
genetic lineage; strain; population with a common ancestor
Technical genetics and microbiology use for a strain or population sharing a common ancestor, such as a mouse strain, bacterial strain, or viral lineage.
同じ系統のマウスを使って実験した。
We conducted the experiment using mice of the same strain.
この菌の系統を調べるためにDNAを解析した。
We analyzed the DNA to examine the strain of this bacterium.