"partial response" means that only part of the desired reaction or answer has been provided or achieved. It indicates that the response is incomplete or lacking in some way. Full definition
Of these, 8 % achieved stringent complete response, 6 % achieved complete response, and 28 % achieved a very good partial response. (cancernetwork.com)
Together with partial response (useful benefit but still some significant complaints), the positive effect of the treatment increased to 65 - 68 per cent and 70 - 88 per cent respectively. (everywomanover29.com)
Several other lawmakers who offered partial responses merely said they were satisfied to defer any questions on the issue to the pay panel. (timesunion.com)