One who researches.

plural of researcher

(uncountable, countable in some dialects) Diligent inquiry or examination to seek or revise facts, principles, theories, applications, etc.; laborious or continued search after truth.

(transitive) To search or examine with continued care; to seek diligently. / (intransitive) To make an extensive investigation into. / (transitive) To search again.

(rare) plural of research

Third-person singular simple present indicative form of research

simple past tense and past participle of research

present participle of research

The act of carrying out research.

That can be researched.