indirect evidence or indirect testimony noun

Circumstantial or inferential evidence

indirect immunofluorescence noun

A technique for detecting the presence of an antigen in which a specific antibody is bound to the antigen and then a second antibody, which is labelled with a fluorochrome and is specific to the first antibody, is used to detect the antigen using a fluorescence microscope

indirect lighting noun

A system of lighting in which the light emitted from the fittings is reflected upwards or diffused

indirect object noun (grammar)

A noun, pronoun or noun phrase affected by the action of the verb but not itself directly acted upon, as the man in Give the man your seat

indirect question noun (grammar)

A question in indirect speech, as in She asked whether he was leaving

indirect speech noun

A person's words reported with adjustment of the necessary person and time, as in He said he was leaving

indirect tax noun

One collected not directly from the taxpayer but through an intermediate agent, as eg a customs duty or sales tax

indirect taxation noun