de·ter·mined / diˈtərmind/ • adj. having made a firm decision and being resolved not to change it: Alice was determined to be heard. ∎  processing or displaying resolve: Helen was a determined little girl a determined effort to reduce inflation.DERIVATIVES: de·ter·mined·ly adv.de·ter·mined·ness n.

determined Describing embryonic tissue at a stage when it can develop only as a certain kind of tissue (rather than as any kind).