13-Letter Words Containing: N,I,G,E,R,I,E,N

• the act of conducting a controlled test or investigation

• the testing of an idea

• a venture at something new or different

• to conduct a test or investigation

• try something new, as in order to gain experience

• the doctrine that reason is the right basis for regulating conduct

• kill en masse; kill on a large scale; kill many

• destroy completely, as if down to the roots

• conceive beforehand

• splitting a ray into two parallel rays polarized perpendicularly