conditional
US /kənˈdɪʃ.ən.əl/
UK /kənˈdɪʃ.ən.əl/

1.
subject to one or more conditions or requirements being met; made or granted on certain terms
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The offer is conditional on a satisfactory inspection.
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Their approval is conditional on us meeting all the requirements.
2.
(of a statement, proposition, etc.) involving or expressing a condition
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A conditional sentence often uses 'if' or 'unless'.
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The logic statement is conditional, depending on the input.
1.
a conditional clause or conjunction
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In grammar, 'if' is a common conditional.
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The programmer used a conditional to control the flow of the program.