nondimensional
adjective
non·di·men·sion·al ˌnän-də-ˈmench-nəl 
-ˈmen(t)-shə-nᵊl,
also -dī-
: not expressed in or representing terms of any particular unit (as of mass, length, or time)
nondimensional numbers
a nondimensional width to height ratio
Word History
First Known Use
1904, in the meaning defined above
- impermissible
- impermissibly
- impers
- impersonable
- impersonal
- impersonalisation
- impersonalisations
- impersonalise
- impersonalised
- impersonalises
- impersonalising
- impersonalism
- impersonalities
- impersonality
- impersonalization
- impersonalizations
- impersonalize
- impersonalized
- impersonalizes
- impersonalizing
- impersonally
- impersonate
- impersonated
- impersonates
- impersonating