(logic) A proposition which is true only because it is a conditional statement with a necessarily false premise, or which asserts a property of all elements of an empty domain of discourse.

plural of vacuous truth

A surname. / A census-designated place in Arizona / A town in Colorado / A city in Iowa

(cosmology) The disagreement of over 100 orders of magnitude between measured values of the vacuum energy density and the theoretical zero-point energy suggested by a naïve application of quantum field theory.

plural of vacuum aspiration

Opposing vaccines and vaccination.

(informal) The labia majora.

plural of vacuum desiccator

(medicine, historical) A pointed piece of quill or bone covered at one end with vaccine matter, used before syringes.

plural of vaccine point