Usage of the character 衍

to spread out
to develop
to overflow
to amplify
superfluous

yǎnbiàn

衍变

[衍變]

to develop
to evolve

fányǎn

繁衍

[繁衍]

to multiply
to reproduce
to increase gradually in number or quantity

fányǎn

蕃衍

[蕃衍]

variant of 繁衍 (fányǎn)

tuīyǎn

推衍

[推衍]

to deduce
to infer
an implication
same as 推演

yǎnshè

衍射

[衍射]

(physics) to diffract

Zōu Yǎn

邹衍

[鄒衍]

Zou Yan (305-240 BC), founder of the School of Yin-Yang of the Warring States Period (475-221 BC)

pùyǎn

铺衍

[鋪衍]

to spread out widely
to disseminate

wòyǎn

沃衍

[沃衍]

rich and fertile (soil)

Xià Yǎn

夏衍

[夏衍]

Xia Yan (1900-1995), Chinese writer, playwright, socialist critic and movie pioneer

qièyǎn

箧衍

[篋衍]

bamboo box

yǎnshēng

衍生

[衍生]

to give rise to
to derive
derivative
derivation

yǎnshēn

衍伸

[衍伸]

to give rise (to)
to spawn
to spread (to)

yǎnhuà

衍化

[衍化]

to evolve (of ideas, designs, constructions etc)
to develop and change

fūyǎn

敷衍

[敷衍]

to elaborate (on a theme)
to expound (the classics)
perfunctory
to skimp
to botch
to do sth half-heartedly or just for show
barely enough to get by

yǎnshēngjù

衍生剧

[衍生劇]

spin-off series (TV)

yǎnshèjiǎo

衍射角

[衍射角]

angle of diffraction (physics)

Yǎnshènggōng

衍圣公

[衍聖公]

hereditary title bestowed on Confucius' descendants

yǎnshēngwù

衍生物

[衍生物]

a derivative (complex product derived from simpler source material)

fūyǎnsèzé

敷衍塞责

[敷衍塞責]

to skimp on the job; to work half-heartedly; not to take the job seriously

Luómóyǎnnà

罗摩衍那

[羅摩衍那]

the Ramayana (Indian epic)

yǎnshègézi

衍射格子

[衍射格子]

diffraction grating (physics)

fūyǎnliǎoshì

敷衍了事

[敷衍了事]

(idiom) to do things half-heartedly; to merely go through the motions

yǎnshēnggōngjù

衍生工具

[衍生工具]

derivative (finance)

Yǎnshènggōngfǔ

衍圣公府

[衍聖公府]

the official residence of Confucius' descendants at Qufu 曲阜, Shandong

yǎnshēngfùcí

衍声复词

[衍聲複詞]

compound word such as 玫瑰 (méiguī) or 咖啡 (kāfēi), whose meaning is unrelated to the component hanzi, which often cannot be used singly

zhòuyìfányǎn

胄裔繁衍

[胄裔繁衍]

Descendants are great in numbers. (idiom)

yǎnshēngchǎnpǐn

衍生产品

[衍生產品]

derivative product
derivative (in finance)

jīnróngyǎnshēngchǎnpǐn

金融衍生产品

[金融衍生產品]

financial derivative

xìndàiyǎnshēngchǎnpǐn

信贷衍生产品

[信貸衍生產品]

credit derivative (in finance)