mcol>'92olian harp, '92olian lyre, a musical instrument consisting of a box, on or in which are stretched strings, on which the wind acts to produce the notes; -- usually placed at an open window. Moore. -- '92olian mode (Mus.), one of the ancient Greek and early ecclesiastical modes.>A`'89r*om"e*try (#), n. [A'89ro- + -metry: cf. F. '82rom'82trie.] The science of measuring the air, including the doctrine of its pressure, elasticity, rarefaction, and condensation; pneumatics.