Pronunciation: (u-tān'),[key] —v.t. 1. to reach, achieve, or accomplish; gain; obtain: to attain one's goals. 2. to come to or arrive at, esp. after some labor or tedium; reach: to attain the age of 96; to attain the mountain peak.
—v.i. 1. to arrive at or succeed in reaching or obtaining something (usually fol. by to or unto): to attain to knowledge. 2. to reach in the course of development or growth: These trees attain to remarkable height.