This rare participle describes something 'scaled off' or 'scale-like,' appearing only in Exodus 16:14 to characterize the manna that appeared in the wilderness. The description is 'a fine, flaky thing, fine as frost on the ground.' The word suggests thin layers or flakes, like fish scales or frost crystals. The reduplicative form intensifies the meaning, emphasizing the delicate, layered texture of this mysterious bread from heaven.