NH
Proposed by a contributor, not yet supported by evidence.
Also seen as: NHs
Meaning · English
prefix code for NASA research helicopter designations.
NounRegister: US
Sources & notes
Adapted from English Wiktionary (CC BY-SA 4.0, retrieved 2026-08-01 via kaikki.org).
Common questions
What does “NH” mean?
prefix code for NASA research helicopter designations.
Is “NH” formal or informal?
NH is generally US.