A distinguishing attribute or quality. / A remedy for a specific disease or condition. / Specification / (in the plural) The details; particulars.

(US) An inexpensive, easily obtained handgun. / (business) An unexpected takeover bid that gives its opponents little time to respond.

(physics) The ratio of the power produced by an object to its mass.

(chemistry, of a compound) [α]_D, the angle of rotation of the plane of polarization of a ray of monochromatic light that passes through 10cm of the substance in solution at a concentration of 1 gram per millilitre

That in which one specializes; a chosen expertise or talent. / A product that originates in and is characteristic of a place. / (obsolete) Particularity. / A particular or peculiar case.

(Britain) Specialised, involving detailed knowledge of a restricted topic.

Someone who is an expert in, or devoted to, some specific branch of study or research. / (medicine) A physician whose practice is limited to a particular branch of medicine or surgery.

Highly skilled in, or specifically adapted to, a specific field.

simple past tense and past participle of specialize

(obsolete, intransitive) To go into specific details. / (rare, transitive) To specify: to mention specifically. / (uncommon, transitive) To narrow in scope.