The kanji 系 primarily conveys the idea of connection, system, lineage, or series. It suggests things that are linked together or related in some way, either by a physical connection, a shared origin, or a logical structure.

・On-yomi (音読み): ケイ (kei) ・Kun-yomi (訓読み): すじ (suji)

⚫︎ 系統 (keitou) Translation: system, lineage, descent ⚫︎ 系列 (keiretsu) Translation: series, affiliation, group of companies ⚫︎ 血系 (ketsukei) Translation: bloodline, lineage

The kanji 系 is a pictophonetic character. It combines a silk radical (糸 - ito) which provides meaning, with a phonetic component (示 - shi). The 糸 (silk) radical hints at the idea of threads or strands, which can be connected to form a system or a line. The original meaning was related to threads. Over time, 系 evolved to encompass broader meanings of connection, system, and lineage.