nonback en · ADJ
Etymology
From non- + back.
Meanings
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(not-comparable) Not back; not produced at the back of the mouth.
Therefore these facts are doubly anomalous, since they have not only gemination after a nonback vowel but also after a vowel that is stressed.
1982, John J McCarthy, Formal problems in semitic phonology and morphology:
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(not-comparable) Not of or pertaining to the back (rear side of the body).
As we have noted, back pain may stem from many nonback conditions, including peptic ulcer, prostate disease, kidney disease, retroverted uterus...
1973, Lawrence W Friedmann, Lawrence Galton, Freedom From Backaches: