A two-dimensional diagnostic ultrasound presentation of echo-producing interfaces in a single plane.
b-method programming, tool A system for rigorous or formal development of software using the notion of Abstract Machines to specify and design software systems. The B-Method is supported by the B-Toolkit. Abstract Machines are specified using the Abstract Machine Notation (AMN) which is in turn based on the mathematical theory of Generalised Substitutions. (1995-03-13)
noun (in Britain) a secondary road
- B-s particle
a neutral meson with a mass 10,507 times that of the electron and a mean lifetime of approximately 1.6 X 10 -12 seconds. B-s particle (bē’ěs’) An electrically neutral meson having a mass 10,507 times that of the electron and a mean lifetime of approximately 1.6 × 10-12 seconds. See Table at subatomic particle.
noun a urine or blood sample used in doping tests in professional sports to confirm or invalidate the presence of banned substances in the first sample, the A-sample See also A-sample