dragon

(stand up) + (dragon radical)
★★☆☆☆
10 strokes
COCKPN

Onyomi

RYUU

Bruce Lee has a new environmentally friendly movie out called REUSE THE DRAGON.

Mnemonic

When the dragon stands up you are pretty much a lost cause.

Kunyomi

たつ In theory, the kunyomi of dragon is TATSU - but oddly it's never used ABOUT DRAGONS THEMSELVES. For example, if you see a dragon, you have to use the ON yomi - 'Hey! It's a ryuu!' However - CONFUSINGLY - some jukugo - such as 'seahorse' and 'tornado' use this kunyomi (TATSU). . . .It's basically the reverse of how kun and on are usually used. COCK
☆☆☆☆☆

Jukugo

恐竜(きょうりゅう)

dinosaur!! ★☆☆☆☆
(dread) + (dragon) = 恐竜 (dinosaur!! )

竜巻(たつまき)

whirlwind ☆☆☆☆☆
(dragon) + (roll up) = 竜巻 (whirlwind)

whirlwind or tornado