Plural of gliadin (alternate spelling of gliadine); protein fractions in grain that form part of gluten.
From gliadin + -s (plural). This is the more standard modern chemistry spelling, though gliadine exists as a variant.
Scientists prefer 'gliadin' over 'gliadine' now, showing how scientific terminology gets standardized and cleaned up as fields mature—it's the shorter, simpler form that won.
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