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Webster 1913 Edition

Noun.

(Zool.)

One of the two dorsal tubular organs on the hinder part of the abdomen of aphids. They give exit to the honeydew. See Illust. under

siphonet ‎(plural siphonets)

(zoology) One of the two dorsal tubular organs on the rear part of the abdomen of aphids, which secrete honeydew.