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Definition of Pseudopetiole
1. Noun. (botany) The petiole of some monocotyledon leaves which is not part of the lower leaf zone. ¹
2. Noun. (botany) A petiole-like constriction of the lamina or similar organ (such as a phyllode or phylloclade). ¹
3. Noun. (botany) The morphologically distinct proximal section of a petiole to which stipules are attached. ¹
¹ Source: wiktionary.com