pseudoair noun2 •An artificially created gas that mimics air.One electrode is a Pt electrode exposed directly to a sample gas, while the other is a Pt pseudoair electrode which is covered with a CO oxidation catalyst. — 1980 •A false appearance or seeming.That is to say, he talks a man's language without any of the pseudoair of condescension that confuses the non-articulate. — 1945
