noun
: the frictional effect of the tidal wave especially in shallow waters lengthening the tidal epoch and tending to retard the rotational velocity of the earth and so increase very slowly the length of the day
noun
: the frictional effect of the tidal wave especially in shallow waters lengthening the tidal epoch and tending to retard the rotational velocity of the earth and so increase very slowly the length of the day
Webster's New International English Dictionary. Новый международный словарь английского языка Webster. 2012