Aridity

[ə'rɪdətɪ] or [æ'rɪdəti]

(noun.) a deficiency of moisture (especially when resulting from a permanent absence of rainfall).

Typed by Jerry--From WordNet

(n.) The state or quality of being arid or without moisture; dryness.

(n.) Fig.: Want of interest of feeling; insensibility; dryness of style or feeling; spiritual drought.

Inputed by Elliot

n. Dryness, SICCITY, want of moisture.

Typed by Allan