pho UK /fəʊ/US /foʊ/exclamation 1noun 1forms 1 exclamation1 •(no longer used) Expressing dismissive contempt. noun1 •A Vietnamese soup with a beef base, typically served with rice noodles and optionally beef or chicken. formsphos
PHO noun2 •Abbreviation of partially hydrogenated oil. •Abbreviation of potentially hazardous object. formsPHOs