A single-celled organism; a unicell.

(obsolete) Unmotivated by personal interest; unbiased, disinterested. / Not interested; indifferent, not concerned.

(physics) A theory that unifies the electromagnetic interaction, the weak interaction, and the strong interaction.

(In the SI system of units) Any unit derived from one of the seven base units of length (meter), mass (kilogram), time (second), electric current (ampere), thermodynamic temperature (kelvin), amount of substance (mole) and luminous intensity (candela).

(government) Of, or having, a single legislative chamber.

Unvarying; all the same. / Consistent; conforming to one standard. / (mathematics) with speed of convergence not depending on choice of function argument; as in uniform continuity, uniform convergence

A distinctive outfit that serves to identify members of a group. / (international standards) Alternative letter-case form of Uniform from the NATO/ICAO Phonetic Alphabet.

(transitive) To clothe in a uniform.

The quantity of heat required to raise the temperature of one pound of water one degree Fahrenheit at a particular temperature (there are several different precise definitions) and a pressure of one atmosphere.

(chemistry) Having an atomic valence of 1, or having only one valence. / (medicine) Having a vaccine valence of 1.