a rare and often fatal acute, febrile, purulent meningoencephalitis caused by usually free-living soil and water amebas of the genera Naegleria, Acanthamoeba, or Hartmannella. Infection caused by Naegleria is generally seen in young persons who swim or bathe in contaminated fresh water, the pathogens gaining access to the central nervous system by penetrating the nasal mucosa and cribriform plate and then following the olfactory bulbs and nerves to the brain and meninges. ...

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PAM stands for Payload Assist Module, a small rocket engine used for launch ...
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