One who opposes, one who shows opposition.

A surname.

Any of various very small scientific probes, especially such a spectrometer

An inhabitant of ancient Illyria. / An inhabitant of Roman province of Illyricum (Illyro-Roman). / (obsolete) A South Slav, especially a Croat, used in 17th-19th centuries. / (uncommon) A Proto-Alb...