preregistration

Short definition from Wiktionary

Noun

1. 1
   An early registration, before the normal or traditional time, as with early online check-in at hotels.
2. 2
   Registration (of a study design) before a clinical trial (or any other type of scientific experiment) begins, for methodologic and thus epistemologic rigor.

Adjective

1. 1
   Before registration.
2. 2
   Pertaining to preregistration (of scientific trials or other experiments).