The quality or state of being grained; the presence of a visible grain pattern or texture.
From 'grained' plus the abstract noun suffix '-ness,' which converts adjectives into nouns describing qualities or states (like 'redness,' 'kindness').
This is a wonderfully specific word that captures how grainedness varies—birch has fine grainedness while oak has coarse grainedness, and furniture makers have spent centuries mastering these distinctions.
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