Some resources are not renewable - such as mineral deposits, petrochemicals and the like. Whether you use them quickly or whether you use them slowly, they don't come back. For this very reason it is hard to define overuse, since any use at all will have the same effect - depletion of the resource.
Adj. 1. altruistic-showing unselfish concern for the welfare of others. selfless. unselfish-disregarding your own advantages and welfare over those of others.
Freebase(0.00 / 0 votes)Rate this definition: Altricial. Altricial, meaning requiring nourishment, refers to a pattern of growth and development in organisms which are incapable of moving around on their own soon after hatching or being born. The word is derived from the Latin root alere meaning to nurse, to rear, or to nourish, and refers to the need for young to be fed and taken care of for a long duration.