Trihedral :: Trihedral (a.) Having three sides or faces; thus, a trihedral angle is a solid angle bounded by three plane angles..
Triquadrantal :: Triquadrantal (a.) Having three quadrants; thus, a triquadrantal triangle is one whose three sides are quadrants, and whose three angles are consequently right angles..
Tundra :: Tundra (n.) A rolling, marshy, mossy plain of Northern Siberia..
Underdrain :: Underdrain (n.) An underground drain or trench with openings through which the water may percolate from the soil or ground above.
Underdrain :: Underdrain (v. t.) To drain by forming an underdrain or underdrains in; as, to underdrain land..
Undrape :: Undrape (v. t.) To strip of drapery; to uncover or unveil.
Undraw :: Undraw (v. t.) To draw aside or open; to draw back.
Withdraw :: Withdraw (v. t.) To take back or away, as what has been bestowed or enjoyed; to draw back; to cause to move away or retire; as, to withdraw aid, favor, capital, or the like..
Withdraw :: Withdraw (v. t.) To take back; to recall or retract; as, to withdraw false charges..
Withdraw :: Withdraw (v. i.) To retire; to retreat; to quit a company or place; to go away; as, he withdrew from the company..
Withdrawal :: Withdrawal (n.) The act of withdrawing; withdrawment; retreat; retraction.