Quantcast
Merriam-Webster Logo
  • Dictionary
  • Thesaurus
  • Scrabble
  • Spanish Central
  • Learner's Dictionary

cardiotonic

play
adjective car·dio·ton·ic \-ˈtä-nik\

Definition of cardiotonic

  1. :  tending to increase the tonus of heart muscle

cardiotonic noun


1927

First Known Use of cardiotonic

1927


Medical Dictionary

1

cardiotonic

play
adjective car·dio·ton·ic \ˌkärd-ē-ō-ˈtän-ik\

Medical Definition of cardiotonic

  1. :  tending to increase the tonus of heart muscle <cardiotonic steroids>




2

cardiotonic

noun car·dio·ton·ic

Medical Definition of cardiotonic

  1. :  a cardiotonic substance




Learn More about cardiotonic

  1. Medical Dictionary: Definition of "cardiotonic"


Seen and Heard

What made you want to look up cardiotonic? Please tell us where you read or heard it (including the quote, if possible).

WORD OF THE DAY

a timid, meek, or unassertive person

Get Word of the Day daily email!

WORD GAMES

Take a 3-minute break and test your skills!

alt-5746713d76276

Which of these is a synonym of nonplus?

disapprove soothe perplex reduce
Name That Thing

Test your visual vocabulary with our 10-question challenge!

TAKE THE QUIZ
SCRABBLE® Sprint

Test Your Knowledge - and learn some interesting things along the way.

TAKE THE QUIZ