Word that means "gap in knowledge"

Post date: 2020-07-04 05:48:35
Views: 354
I recently came across a single word that meant "gap in knowledge" or "a gap to be filled", when I was reading a scientific manuscript. Now for the life of me, I cannot recall what the word was, but it was incredibly useful. It was a single word, not a phrase, and maybe started with the letter L (or maybe not). Google was no help. Ask Metafilter, you're my only hope!
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