系 — lineage, system

Readings

On'yomi

ケイ

Example words

• 体系たいけいsystem; organization; organisation; architecture
• 系統けいとうsystem; family line; geological formation; lineage; ancestry
• 系けい(1) system; lineage; group (2) corollary (3) (geological) system (range of strata that correspond to a particular time period) (4) (taxonomical) series