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