second–line

adjective sec·ond–line \ˈse-k^ən(d)-ˈlīn\

Definition of SECOND-LINE

: not being the usual or preferred choice <second–line drugs to treat tuberculosis> — compare first-line

1991

Medical Dictionary

adjective sec·ond–line \ˌsek-^ən(d)-ˌlīn\

: being or using a drug that is not the usual or preferred choice—compare first-line

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