界

(bound form) boundary; border; (bound form) realm

9 strokes Dict coverage rank #359 U+754C

Phono-semantic compound (形声字)

田 (semantic, “farm”) + 介 (phonetic, jiè)

components: 田介

world · Heisig RSH #260

介 introduce + 田 rice field

Keyword method from Heisig's Remembering Simplified Hanzi.

Phonetic series: characters sharing the sound component 介

Siblings built with the same phonetic component 介 (jiè) — compare how they read:

Character	Pinyin	Meaning
介 sound component	jiè	agent, go-between, intermediary; to introduce; shell, armor
价	jià	price, value
阶	jiē	stairs, steps; degree, rank
芥	jiè	mustard, broccoli
尬	gà	awkward, embarrassed; to limp, to stagger
疥	jiè	scabies; to itch
蚧	jiè	horny toad; red-spotted lizard

Word	Pinyin	Meaning
人机界面	rén jī jiè miàn	user interface
无国界	wú guó jiè	without borders (used for organizations such as Médecins sans Frontières)
大开眼界	dà kāi yǎn jiè	(idiom) to broaden one's horizons greatly
本地管理界面	běn dì guǎn lǐ jiè miàn	LMI; local management interface (telecommunications)
世界自然基金会	Shì jiè Zì rán Jī jīn huì	World Wildlife Fund WWF
生物界	shēng wù jiè	(biology) the biological world; the realm of living organisms
动物界	dòng wù jiè	animal kingdom
花花世界	huā huā shì jiè	the teeming world; the world of sensual pleasures
国界线	guó jiè xiàn	national border
世界野生生物基金会	Shì jiè Yě shēng Shēng wù Jī jīn huì	World Wildlife Fund (WWF)
平行世界	píng xíng shì jiè	parallel universe
世界运动会	Shì jiè Yùn dòng huì	World Games
分界线	fēn jiè xiàn	dividing line
开眼界	kāi yǎn jiè	to broaden one's horizons
科学界	kē xué jiè	world of science; scientific circles
二人世界	èr rén shì jiè	world with only two people (usually refers to a romantic couple); romantic couple's world
无国界料理	wú guó jiè liào lǐ	fusion cuisine (Tw)
无国界记者	Wú guó jiè Jì zhě	Reporters Without Borders (pressure group)
世界卫生大会	Shì jiè Wèi shēng Dà huì	World Health Assembly
日界线	rì jiè xiàn	International Date Line