凝

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to congeal; to concentrate attention; to stare

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Formation & memory

Break the character into parts you already know.

Phono-semantic compound (形声字)

冫 meaning “ice” + 疑 sound ( yí )

Components 冫疑

congeal · Heisig RSH #2436

ice + furled brow

Keyword method from Heisig's Remembering Simplified Hanzi.

The most common words first — learning a character in context makes it stick.

Word	Pinyin	Meaning
外源凝集素	wài yuán níng jí sù	(biochemistry) lectin
男性凝视	nán xìng níng shì	male gaze
凝花菜	níng huā cài	gelidiella, tropical and subtropical red algae
凝血素	níng xuè sù	hemaglutinin (protein causing blood clotting)
血凝素	xuè níng sù	hemaglutinin (the H of virus such as bird flu H5N1)
冰凝器	bīng níng qì	cryophorus
凝集素	níng jí sù	(biochemistry) agglutinin; lectin
血液凝结	xuè yè níng jié	blood clotting
水凝胶	shuǐ níng jiāo	hydrogel
气凝胶	qì níng jiāo	aerogel
凝胶体	níng jiāo tǐ	gel
抗凝血剂	kàng níng xuè jì	anticoagulant
凝聚力	níng jù lì	cohesion; cohesiveness; cohesive
凝神	níng shén	with rapt attention
凝重	níng zhòng	dignified; grave (expression); imposing (attitude); heavy (atmosphere); (music etc) deep a…
凝血	níng xuè	blood clot
血凝	xuè níng	to coagulate
混凝土	hùn níng tǔ	concrete (building material)
凝固点	níng gù diǎn	freezing point
凝固汽油弹	níng gù qì yóu dàn	napalm

Characters sharing the sound component 疑 — compare how they read.

Character	Pinyin	Meaning
疑 sound part	yí	to doubt, to question, to suspect
嶷	yí	a mountain range in Hunan province