(software engineering) Testing a program after a modification to ensure that areas that should not be affected by the update behave as they did in previous versions.

regard for or consideration of oneself or one's own interests

plural of regal geranium

(flowers, horticulture) Any of a group of hybrid pelargoniums known for their upright habit and large, showy flowers, Pelargonium × domesticum

(US, informal) Alternative form of Joe Average (“typical average person”)

(mathematics, physics) A mathematical formulation for a black hole which does not contain a singularity. The environment outside the event horizon is the same as other formulations for black holes.

(phonetics, phonology) An assimilation whereby a sound becomes more like the following sound.

plural of regressive assimilation

plural of regular map

(algebraic geometry) A morphism between algebraic varieties.