Definition of "NH"
NH
noun
plural NHs
(US, aviation) prefix code for NASA research helicopter designations.
(athletics) Abbreviation of no-height.
verb
third-person singular simple present NHs, present participle NHing, simple past and past participle NHed
(athletics) Abbreviation of no-height.
adjective
not comparable
(philately) Initialism of never hinged.