Pulex

n.

[L., a flea.]
(Zoöl.) A genus of parasitic insects including the fleas. See Flea.

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(pyū'lĕks')
n.

A genus of fleas including Pulex irritans, the common flea that infests humans.

A genus of fleas, several species of which transmit the microorganism causing bubonic plague in humans.

• P. irritans — a widely distributed species, known as the human flea, which infests domestic animals as well as humans, and may act as an intermediate host of certain helminths.
• P. porcinus — the peccary flea.

IN BRIEF: n. - Type genus of the common flea.

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The noun has one meaning:

Meaning #1: type genus of the Pulicidae
  Synonym: genus Pulex

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