noun
: the condition of balance with the moisture content of the air, being in wood equivalent to about 15 percent of moisture at which level wood neither takes on nor loses moisture when exposed to air
noun
: the condition of balance with the moisture content of the air, being in wood equivalent to about 15 percent of moisture at which level wood neither takes on nor loses moisture when exposed to air
Webster's New International English Dictionary. Новый международный словарь английского языка Webster. 2012