suctional

形容词 adj.
中文释义

英文释义

形容词 adj.
  1. Relating to suction. not-comparable
    — Their peculiar hooting invariably preceded feeding; it had no modulation, and was, I believe, in no sense a signal, but merely the expiration of air preparatory to the suctional operation.

词源

From suction + -al.
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