| Noun | 1. | waterlessness - the condition of not containing or being covered by a liquid (especially water) condition, status - a state at a particular time; "a condition (or state) of disrepair"; "the current status of the arms negotiations" dehydration, desiccation - dryness resulting from the removal of water drought, drouth - a shortage of rainfall; "farmers most affected by the drought hope that there may yet be sufficient rain early in the growing season" aridness, thirstiness, aridity - a deficiency of moisture (especially when resulting from a permanent absence of rainfall) sereness - a withered dryness conjunctivitis arida, xeroma, xerophthalmia, xerophthalmus - abnormal dryness of the conjunctiva and cornea of the eyes; may be due to a systemic deficiency of vitamin A dry mouth, xerostomia - abnormal dryness of the mouth resulting from decreased secretion of saliva |