(chemistry) A covalent bond (or series of bonds) between adjacent chains of a polymer / (biochemistry) A similar bond between strands of nucleic acid

To be awkward, careless, or negligent, especially with regard to dress and neatness. / To be wasteful.

Relating to mystics or mysticism. / Having a spiritual or magical significance that transcends human understanding. / Inspiring a sense of spiritual mystery, awe, and fascination.

(geometry) The amount by which the sum of the three angles of a spherical triangle exceeds two right angles. The spherical excess is proportional to the area of the triangle.