Containing gluten or having the sticky, viscous quality characteristic of gluten; resembling glue.
From 'gluten' (from Latin 'gluten,' meaning glue) + '-ous' (full of). The adjective developed in the 19th century as food chemistry became more precise, describing the sticky protein substance.
When the label says 'glutenous rice,' it's describing rice that gets super sticky and gluey when cooked—the gluten connection reminds us that the word literally comes from Latin for 'glue'!
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