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平面 (へいめん) Japanese meaning | Kotomora

平へい面めん

へ

い

め

ん

Common wordJLPTN1Freq.FrequencyTop 20,000

Meanings

1

noun

plane; level surface; flat surface

Refers to a geometrically flat surface or a two-dimensional plane. Used in mathematics, engineering, and everyday descriptions of flat areas.

このテーブルの平へい面めんはとても滑なめらかだ。
The surface of this table is very smooth.
数すう学がくで平へい面めんの方ほう程てい式しきを学まな

ん

だ

。

We learned the equation of a plane in math.

Kanji

平even, flat, peace
面mask, face, features

Similar words

表ひょう面めん
表面 means 'surface' in a more general sense, often the outer face of an object, while 平面 emphasizes flatness and is common in geometry.
水すい平へい面めん
水平面 specifically means 'horizontal plane' or 'water level', whereas 平面 is any flat plane regardless of orientation.

Etymology

Compound of 平 (flat, level) and 面 (surface, face). The reading is on'yomi, suggesting a Sino-Japanese origin.