1854 "involving similarity of sounds or harmony" (implied in symphonically); see symphony + -ic. Meaning "pertaining to a symphony" is from 1864. Earlier was symphonious (1650s).
symphonic choir
the symphonic hum of a million insects
sympathise
sympathize
sympathizer
sympathy
sympatric
symphonic
symphony
symphysis
symposium
symptom
symptomatic
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