The state of being arch.

plural of archness

(astronomy) One of the moons of Jupiter.

plural of arching

Arch; knowing.

A diminutive of the male given names Archibald or Archie.

Abbreviation of archaic. / Abbreviation of architectural.

(uncountable) Abbreviation of archaism. / (uncountable) Abbreviation of archery. / (countable) Abbreviation of archipelago. / (countable) Abbreviation of architect.

(statistics) Initialism of autoregressive conditional heteroskedasticity

An inverted U shape. / An arch-shaped arrangement of trapezoidal stones, designed to redistribute downward force outward. / (architecture) An architectural element having the shape of an arch