say it: in-tuh-NAY-shuhn
intonation is a noun meaning "rise and fall of the voice pitch". It carries 4 recorded senses.
rise and fall of the voice pitch
singing by a soloist of the opening piece of plainsong
the act of singing in a monotonous tone
the production of musical tones (by voice or instrument); especially the exactitude of the pitch relations
Forms marked · are formed by the regular rule rather than recorded in the source data. English keeps a few hundred irregulars and the rest follow the pattern, so the rule is right far more often than not — but it is a rule, and the mark says so.
Definitions, synonyms and semantic relations for intonation come from Princeton University’s WordNet. The pronunciation comes from the CMU Pronouncing Dictionary. Commonness is measured against a corpus of everyday English. Full sources and licences.