https://www.merriam-webster.com/dictionary/nonterminal
NONTERMINAL Definition & Meaning - Merriam-Webster
The meaning of NONTERMINAL is not terminal. How to use nonterminal in a sentence.
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https://lists.w3.org/Archives/Public/www-archive/2011Dec/0004.html
[css3-images] missing nonterminal from L. David Baron on 2011-12-01 (www-archive@w3.org from...