(physics, quantum mechanics) The principle that there is an absolute limit on the combined accuracy of certain pairs of simultaneous, related measurements, especially that of the position and momentum of a particle. Originally posited as a problem of measurement, it was soon refined as an inherent property of the universe.

In an uncomfortable manner.

Dirty, unhygienic, not clean. / Not pure in a moral or religious sense.

not in a clean way; in an unclean way

(rare) Of or relating to an ounce, or an inch, especially to letters printed an inch high.

Of or relating to a majuscule style of writing with unjoined, rounded letters, originally used in the 4th–9th centuries.

A style of writing using uncial letters. / A letter in this style. / A manuscript in this style.

An uncle of one's parent (i.e. a brother or brother-in-law of one's grandparent).

Not changeable; incapable of being changed or of changing; immutable.

Something that cannot be changed.