first-line

adjective \ ˈfərst-ˈlīn \

Definition of first-line

: being the preferred, standard, or first choice
  • first-line treatment of tuberculosis
— compare second-line

First Known Use of first-line

1919

in the meaning defined above

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FIRST-LINE Defined for English Language Learners

first-line

Definition of first-line for English Language Learners

  • : used or chosen first

  • : available to be used immediately


Medical Dictionary

first-line

adjective \ ˈfərst-ˈlīn \

medical Definition of first-line

: being the preferred, standard, or first choice
  • first-line treatment of advanced breast cancer
— compare second-line

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