bioactive adjective 2noun 1forms 3 adjective2 •Biologically active; having a biological effect.Although some cephalopod inks have been studied chemically, there’s still a lot unknown about the bioactive function of ink when released in the wild. — 2017 •Describing a terrarium, vivarium, etc. that is self-sustaining and mimics a natural habitat. noun1 •Such a material formsbioactives · more bioactive · most bioactive