Protohemiptera
plural noun
Pro·to·hemiptera
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: an order of extinct insects known only from the Upper Carboniferous and Permian, formerly considered ancestral to the Hemiptera but now usually regarded as closely related to the Palaeodictyoptera, and characterized by suctorial mouthparts and by a wing venation like that of the Palaeodictyoptera
protohemipteran
adjective or noun
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protohemipteron
noun
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plural -s
protohemipterous
adjective
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Merriam-Webster unabridged
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