原型

げんけい · genkei · JLPT N1 · noun

prototype

原 — cliff 厂 + spring 泉 (white 白 + water 水)
Originally a pictograph showing a spring of water flowing out from beneath a cliff, depicting the source of a stream. From this concrete image of a water source, the meaning extended to 'origin,' 'source,' and 'original.' A separate character 源 was later created with the water radical 氵 to keep the literal 'spring' sense.

型 — earth 土 + 刑 (xíng, phonetic)
型 is a semantic-phonetic compound. The 土 (earth) component points to its original meaning: a clay or earthen mold used for casting. The right side 刑 supplies the sound. From 'casting mold' it broadened to mean 'model, type, pattern' in modern usage.

More Japanese words · How Japanese works