SINCE 1828
second-line
adjective
sec·ond-line
| \ ˈse-kᵊn(d)-ˈlīn
\
\
Definition of second-line
: not being the usual or preferred choice
second-line drugs to treat tuberculosis
— compare first-line
Keep scrolling for more
Keep scrolling for more
More Definitions for second-line
second-line
adjective
sec·ond-line
| \ ˌsek-ᵊn(d)-ˌlīn
\
\
Medical Definition of second-line
: being or using a drug that is not the usual or preferred choice — compare first-line
Comments on second-line
What made you want to look up second-line? Please tell us where you read or heard it (including the quote, if possible).
Test Your Vocabulary
Words for Summer: A Quiz
-
- Which of the following words means “of or relating to summer”?
Can you spell these 10 commonly misspelled words?
TAKE THE QUIZ
Test Your Knowledge - and learn some interesting things along the way.
TAKE THE QUIZLove words? Need even more definitions?
Merriam-Webster unabridged
Words at Play
Ask the Editors
Word Games
-
Words for Summer: A Quiz
Test your knowledge of words related to the season of longer days and vacations.
Take the quiz -
Finance Words Quiz
Take the quiz
-
Spell It
Can you spell these 10 commonly misspelled words?
Take the quiz -
Add Diction
Build a chain of words by adding one letter at a time.
Play the game
Share second-line
Resources for second-line