Noun

(harmonies)

Agreement or accord.

* America's social harmony has depended at least to some degree on economic growth. It is easier to get along when everyone, more or less, is getting ahead.'' — , '' Why It’s Time to Worry , Newsweek 2010-12-04

A pleasing combination of elements, or arrangement of sounds.

(music) The academic study of chords.

(music) Two or more notes played simultaneously to produce a chord.

(music) The relationship between two distinct musical pitches (musical pitches being frequencies of vibration which produce audible sound) played simultaneously.

A literary work which brings together or arranges systematically parallel passages of historians respecting the same events, and shows their agreement or consistency.

a harmony of the Gospels

Noun

The condition of being resonant.

* {{quote-news

, year=2012 , date=May 24 , author=Nathan Rabin , title=Film: Reviews: Men In Black 3 , work=The Onion AV Club citation , page= , passage=But the film is largely redeemed by an unexpected emotional resonance befitting a Steven Spielberg production.}}

A resonant sound, echo

(figuratively) Something that evokes an association, or a strong emotion.

(physics) The increase in the amplitude of an oscillation of a system under the influence of a periodic force whose frequency is close to that of the system's natural frequency.

(nuclear physics) A short-lived subatomic particle that cannot be observed directly.

* 2004', When experiments with the first ‘atom-smashers’ took place in the 1950s to 1960s, many short-lived heavier siblings of the proton and neutron, known as ‘'''resonances ’, were discovered. — Frank Close, ''Particle Physics: A Very Short Introduction (Oxford 2004, p. 35)

An increase in the strength or duration of a musical tone produced by sympathetic vibration.

(chemistry) The property of a compound that can be visualized as having two structures differing only in the distribution of electrons.