that reacts or responds to a stimulus
Characterized by induction or capacitance rather than resistance.
that readily takes part in reactions
Reacting to the past rather than anticipating the future, not predictive.
Of, affecting, or pertaining to the understanding of language rather than its expression.
Capable of receiving something.
Of a female animal (especially a mammal): prepared to mate; in heat, in oestrus.
Of a female flower or gynoecium: ready for reproduction; fertile.
Ready to receive something, especially new concepts or ideas.