平方
へいほう · heihou · JLPT N1 · noun
gram
📐 平 = flat + 方 = square: a flat square patch, so 平方 means square meter, or squared
平 means flat or level, and 方 means square or direction. Together, 平方 measures flat area, and in math it means squared: 3平方 is 3 squared.
平 — horizontal stroke 一 + 干 with two dots 八
平 originally depicted a balance or scale being level, suggesting evenness. The horizontal lines and symmetrical dots evoke a flat, balanced surface. Over time it extended from 'level/flat' to broader senses like 'calm,' 'peaceful,' and 'ordinary.'
方 — pictograph of a plow or two boats joined side by side
方 originated as a pictograph, traditionally interpreted as a plow handle or two boats lashed together. From the idea of paired boats it extended to mean 'side by side,' then 'square,' 'direction,' and 'region.' It was later borrowed for the abstract sense of 'method' or 'way.'