Main Entry: na·ive

Variant(s): or na·ïve \nä-ˈēv\

Function: adjective

Inflected Form(s): na·iv·er; na·iv·est

1 : not previously subjected to experimentation or a particular experimental situation <naive laboratory rats>
2 : not having previously used a particular drug (as marijuana)
3 : not having been exposed previously to an antigen <a naive immune system> <naive T cells>