Definition of platinic acid
: a weak acid H2Pt(OH)6 obtained as a yellowish white precipitate by hydrolysis of chloroplatinic acid; hexa-hydroxo-platinic acid
Test Your Vocabulary
Slippery Words Quiz—Changing with the Times
- What is an earlier meaning of nice?

Test your visual vocabulary with our 10-question challenge!
TAKE THE QUIZ
Spell words. Make bears.
TAKE THE QUIZLove words? Need even more definitions?
Merriam-Webster unabridgedWords at Play
Ask the Editors
Word Games
Share platinic acid