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

First Known Use of second-line

1969

in the meaning defined above

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Medical Dictionary

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

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