testate adjective 2noun 1forms 1 adjective2 •having left a legally valid last will and testament (of one who has died). •Having a test (external calciferous shell or endoskeleton)High frequency of species with acrostomy, eg species of the genera Euglypha, Assulina and Nebela, supports the conclusion that humidity is a major structuring force for testate amoebae at TH III. — 2010 noun1 •one who has left a valid will and testament formstestates