起点
きてん · kiten · JLPT N1 · noun
terminus a quo
起 — 走 (run) + 己 (self/phonetic)
起 combines 走 'run/walk' as the meaning component with 己 as the phonetic component. The 走 element suggests movement of the body, giving the core sense of rising up or starting to move. From there it extended to meanings like 'get up,' 'begin,' and 'arise.'
点 — fire radical 灬 + 占 (zhān, phonetic)
Originally written 點, a semantic-phonetic compound: 黑 (black) gave the meaning 'small black mark or dot' while 占 supplied the sound. It first referred to ink spots, then extended to 'point, drop, a little,' and verbs like 'to mark' or 'to light (a fire),' reflected in the simplified form's 灬 (fire) component.