WFF definitions

Wff

1) Wallops flight facility
Found on https://www.crosswordclues.com/clue/wff

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wff

A well-formed formula.
Found on http://www.daviddarling.info/encyclopedia/W/wff.html

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WFF

acronym: Wallops Flight Facility
Found on https://www.encyclo.co.uk/local/20002

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