(topology) A connected component of the complement in a manifold of a lamination of that manifold.

(historical) The regency of George Augustus Frederick of Saxe-Coburg and Gotha, before he became King George IV; that is, the period in United Kingdom history in which he ruled as prince regent (1811–1820).

A city in North Dakota.

A prince who rules a country as a regent in place of a monarch who is unfit to rule for whatever reason.

Concerning; about.

(idiomatic) Regularly; occurring in regular time intervals or patterns.

Medicine that replaces or regenerates human cells, tissue or organs, to restore or establish normal function.

(obsolete) since; because; inasmuch as; considering that; considering.

(data mining) A data-analysis method that recursively partitions data into sets each of which are simply modeled using regression methods. / A classification and regression tree.

plural of regular star macromolecule