Wordnet 3.0
NOUN (1)
1.
wetness in the atmosphere;
[syn: humidity, humidness]
The Collaborative International Dictionary of English v.0.48:
Humidness \Hu"mid*ness\, n.
Humidity.
[1913 Webster]
WordNet (r) 3.0 (2006):
humidness
n 1: wetness in the atmosphere [syn: humidity, humidness]