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螺線面 (らせんめん) Japanese meaning | Kotomora

螺ら線せん面めん

Meanings

1

noun

A mathematical surface generated by a line rotating and moving along an axis; a specific type of ruled surface.

螺ら線せん面めんは、直ちょく線せんがらせん運うん動どうをすることでできる曲きょく面めんである。
A helicoid is a curved surface formed by a line undergoing helical motion.

Kanji

螺small, edible, helical fresh-water mollusk
線line, track
面mask, face, features

Similar words

螺ら旋せん
螺旋 means 'spiral' or 'helix' in general, while 螺線面 specifically refers to the helicoid surface in geometry.

Etymology

Compound of 螺線 (rasen, 'helix') and 面 (men, 'surface'). The exact historical derivation is uncertain; the term is a modern mathematical coinage.