Longman Dictionary English From Longman Dictionary of Contemporary Englishhumidifyhu‧mid‧i‧fy /hjuːˈmɪdɪfaɪ/ verb (humidified, humidifying, humidifies) [transitive] WETto add very small drops of water to the air in a room etc because the air is too dry→ See Verb table ldoceonline.com
