<p><strong>Noun:</strong></p><ul><li>The act of squaring.</li><li>Mathematics: the act or process of finding a square equal in area to a given surface, especially a surface bounded by a curve.</li><li>The act or process of finding an area or calculating an integral, especially by numerical methods.</li><li>A definite integral.</li><li>Astronomy: the situation of two heavenly bodies when their longitudes differ by 90°.</li><li>Either of the two points in the orbit of a body, as the moon, midway between the syzygies.</li><li>(Of the moon) those points or moments at which a half moon is visible.</li><li>Electronics: the relation between two signals having the same frequency that differ in phase by 90°.</li></ul>