Usage of the character 弦

sanxian, large family of 3-stringed plucked musical instruments, with snakeskin covered wooden soundbox and long neck, used in folk music, opera and Chinese orchestra

xiàxián

下弦

[下弦]

last quarter, aka third quarter (phase of the moon)

xiányuè

弦乐

[弦樂]

string music

xiányuè

弦月

[弦月]

half-moon
the 7th and 8th and 22nd and 23rd of the lunar month

xīnxián

心弦

[心弦]

heartstrings

xiánlùn

弦论

[弦論]

string theory (in theoretical physics)

gōngxián

弓弦

[弓弦]

bowstring

shàngxián

上弦

[上弦]

to wind up a watch, clockwork toy etc
to tighten the string of a bow, violin etc
first quarter (phase of the moon)

xùxián

续弦

[續弦]

(literary) (of a widower) to remarry

zhèngxián

正弦

[正弦]

(math.) sine

xiánshù

弦数

[弦數]

number of strings (of an instrument)

kūnxián

鹍弦

[鵾弦]

pipa strings, made from sinews of large crane or swan 鵾雞／鹍鸡 (kūnjī)

qínxián

琴弦

[琴弦]

string (of a stringed instrument)

chāoxián

超弦

[超弦]

superstring (physics)

dìngxián

定弦

[定弦]

tuning (stringed instrument)
(fig.) to make up one's mind

Gxiánkù

G弦裤

[G弦褲]

G-string

zhèngxiánxíng

正弦形

[正弦形]

sinusoidal (shaped like a sine wave)

xiánlǐlùn

弦理论

[弦理論]

string theory (physics)

zhǔhéxián

主和弦

[主和弦]

tonic triad
triad of the home key

sānhéxián

三和弦

[三和弦]

(music) triad; three-note chord

xiányuèchuāng

弦月窗

[弦月窗]

a narrow slit window
a lunette

xiánqiējiǎo

弦切角

[弦切角]

chord angle (i.e. angle a chord of a curve makes to the tangent)

xiányuèduì

弦乐队

[弦樂隊]

string orchestra

jīxiánlèi

击弦类

[擊弦類]

hammered string type (of musical instrument)

shàngxiányuè

上弦月

[上弦月]

first quarter moon

qīxiánqín

七弦琴

[七弦琴]

guqin or seven-stringed zither

qīhéxián

七和弦

[七和弦]

seventh (musical cord)

xiàxiányuè

下弦月

[下弦月]

third quarter moon, aka last quarter moon

gōngxiánr

弓弦儿

[弓弦兒]

bowstring

zhǎnxiánbǐ

展弦比

[展弦比]

(wing) aspect ratio (aerodynamics)

zhèngxiánbō

正弦波

[正弦波]

sine wave
simple harmonic vibration

xiányuèqì

弦乐器

[弦樂器]

string instrument

guǎnxiányuè

管弦乐

[管弦樂]

orchestral music

xiánwàizhīyīn

弦外之音

[弦外之音]

overtone (music)
(fig.) connotation
implied meaning

xiánwàizhīxiǎng

弦外之响

[弦外之響]

see 弦外之音 (xiánwàizhīyīn)

guǎnxiányuèduì

管弦乐队

[管弦樂隊]

orchestra

shuāngqūyúxián

双曲余弦

[雙曲餘弦]

hyperbolic cosine or cosh (math.)

Chángdésīxián

常德丝弦

[常德絲弦]

Changde sixian, theatrical folk music style with singing in Changde dialect accompanied by traditional string instruments

xián'érgǔzhī

弦而鼓之

[弦而鼓之]

to put strings on the zither, then play it (line from a Ming dynasty text by 劉伯溫／刘伯温 ( Liú Bówēn))
(fig.) to play music

guǎnxiányuètuán

管弦乐团

[管弦樂團]

orchestra

fēnsànhéxián

分散和弦

[分散和弦]

(music) arpeggio

xiánwàizhīyì

弦外之意

[弦外之意]

see 弦外之音 (xiánwàizhīyīn)

xiánsòngbùchuò

弦诵不辍

[弦誦不輟]

incessant playing of instruments and reciting of poems (idiom)

zhèngxiándìnglǐ

正弦定理

[正弦定理]

law of sines

xiánmíngyuèqì

弦鸣乐器

[弦鳴樂器]

string instrument

bōxiányuèqì

拨弦乐器

[撥弦樂器]

plucked string or stringed instrument
plucked instrument

xiánsòngbùchuò

弦诵不缀

[弦誦不綴]

variant of 弦誦不輟／弦诵不辍 (xiánsòngbùchuò)

xiǎosānhéxián

小三和弦

[小三和弦]

minor triad la-do-mi

gǎixiányìzhé

改弦易辙

[改弦易轍]

change of string, move out of rut (idiom); dramatic change of direction
to dance to a different tune

shuāngqūzhèngxián

双曲正弦

[雙曲正弦]

hyperbolic sine or sinh (math.)

kòurénxīnxián

扣人心弦

[扣人心弦]

to excite
to thrill
exciting
thrilling
cliff-hanging

zēngsānhéxián

增三和弦

[增三和弦]

augmented triad (musical chord)

dàsānhéxián

大三和弦

[大三和弦]

major triad do-mi-so

jīxiánlèiyuèqì

击弦类乐器

[擊弦類樂器]

hammered string musical instrument

shuāngqūxiànzhèngxián

双曲线正弦

[雙曲線正弦]

hyperbolic sine or sinh (math.)