Of, or pertaining to, Guadeloupe

(patent law, pharmaceuticals) To extend the term of a patent beyond the normal legal limit, usually through repeated small modifications.

(organic chemistry) The dicarboxylic acid 1-butene-1,2,4-tricarboxylic acid formally derived from aconitic acid by addition of a methylene group

(physics) A stable isotope of nitrogen, ¹⁵₇N, having seven protons and eight neutrons; it accounts for less than 0.4% of the natural element; it is used in nuclear magnetic resonance spectroscopy