The interval between the reception of a stimulus and the initiation of a response

(immunology) The degree to which an antigen is effective against an antibody that was generated against a different antigen

plural of reaction vessel

plural of reactor scram

plural of reaction turbine

plural of reaction mixture

plural of rearrangement reaction

(theoretically), a thermonuclear reactor that relies on the controlled fusion of light elements into heavier elements, with the attendant release of enormous amounts of energy. In practice, satisfactory results have not yet been achieved.

In a reactive fashion. / (chemistry) In relation to or by means of a reaction.

In a reactionary manner.