hy‧per‧ven‧ti‧late /ˌhaɪpəˈventəleɪt, ˌhaɪpəˈventɪleɪt $ -pərˈventl-eɪt/ verb [intransitive]
to breathe too quickly or too deeply, so that you get too much oxygen and feel dizzy
—hyperventilation /ˌhaɪpəventəˈleɪʃən, ˌhaɪpəventɪˈleɪʃən $ -pərventlˈeɪ-/ noun [uncountable]

[TahlilGaran] Dictionary of Contemporary English ▲