资料来源 : pyDict

滑音,延音

资料来源 : Webster's Revised Unabridged Dictionary (1913)

Portamento \Por`ta*men"to\, n. [It., fr. portare to carry.]
   (Mus.)
   In singing, or in the use of the bow, a gradual carrying or
   lifting of the voice or sound very smoothly from one note to
   another; a gliding from tone to tone.