二次

èrcì

adjective

Meanings

1 second (number two)
2 second time
3 twice
4 (math.) quadratic, of degree two
5 secondary

Characters

time, occurrence, order

Examples

这是我第二次来北京。

Zhè shì wǒ dì'èr cì lái Běijīng.

This is my second time coming to Beijing.

请解这个二次方程。

Qǐng jiě zhège èrcì fāngchéng.

Please solve this quadratic equation.

二次创作在网络上很流行。

Èrcì chuàngzuò zài wǎngluò shàng hěn liúxíng.

Secondary / derivative creative work is very popular online.

Tips

usage

Two distinct meanings: (1) 'second / twice' as ordinal/counter, often as 第二次 or 再一次; (2) the math sense - 二次方程 (quadratic equation), 二次函数 (quadratic function). Also forms 二次元 (erciyuan), the slang for anime / 2D culture.

memory

If you see 二次 in tech or fan circles, it's almost always part of 二次元 (erciyuan, '2D dimension') - the world of anime, manga, and games.

Stroke Order

二 èr

次 cì