Copyright © 2026 Kotomora. All Rights Reserved.

Words Kanji Guides About

放物線 (ほうぶつせん) Japanese meaning | Kotomora

放ほう物ぶつ線せん

ほ

う

ぶ

つ

せ

ん

Freq.FrequencyTop 50,000

Meanings

1

noun

mathematics

Mathematical term for the curve formed by the intersection of a cone with a plane parallel to its side.

放ほう物ぶつ線せんは二に次じ関かん数すうのグラフとしてよく現あらわれる。
A parabola often appears as the graph of a quadratic function.

ボールを投なげたときの軌き道どうは放ほう物ぶつ線せんを描えがく。

The trajectory of a thrown ball draws a parabola.

Written forms

放ほう物ぶつ線せん
Standard kanji spelling for 'parabola'.
抛ほう物ぶつ線せん
rarely-used kanji form
Rarely used kanji form; 抛 is a variant of 放.

Kanji

放set free, release, fire
物thing, object, matter
線line, track
抛hurl

Similar words

双そう曲きょく線せん
双曲線 (hyperbola) is a different conic section, formed by a plane intersecting both halves of a double cone.
楕だ円えん
楕円 (ellipse) is a closed conic section, unlike the open curve of a parabola.

Etymology

From 放 (release, throw) + 物 (object) + 線 (line), referring to the curve traced by a thrown object. The alternative form 抛物線 uses the variant kanji 抛 (throw).