A statistical Markov model in which the system being modelled is assumed to be a Markov process with unobserved (hidden) states.

(now chiefly historical) A piece of lace or other fabric worn over a woman's dress to cover the bosom.

plural of modesty piece

(algebra) The monoid action of a ring R on an abelian group.

(quantum mechanics) An effective field theory describing a vector field with a vacuum expectation value that spontaneously breaks Lorentz symmetry.

(music) A little faster than andante.

(music) A little slower than allegro.

(chemistry) A molecular model of a chemical substance, displaying the three-dimensional position of the atoms (as spheres) and the bonds between them (as connecting rods).

(Internet) A technique used by some web browsers to maintain backward compatibility with older web pages that do not comply with modern standards. When such a page is detected, it is rendered in the older, non-standard way.

A person in a developed nation who engages in body modification rituals and practices while making reference or homage to the rite of passage practices in "primitive cultures".