isophone

An isophone connects two words that sound the same but have different meanings.

Definition

1. Noun (Linguistics):
   • An "isophone" is a line drawn on a dialect map to mark the boundary of a particular phonetic feature, such as the pronunciation of a specific sound or phoneme, across a geographic area.

Usage Examples

• Noun:
  • The isophone clearly separates the regions where the vowel in "house" is pronounced as [aʊ] versus [uː]. (This line on the map indicates a phonetic boundary.)
  • Linguists use isophones to study how sound changes spread across different dialects. (These lines help map phonetic variation.)

Advanced Usage

• "to draw an isophone": to map the geographical limit of a phonetic feature.
  • The researcher drew an isophone for the pronunciation of the "r" sound in the study area. (The researcher marked the boundary where the "r" sound changes.)

Variants and Related Words

• Isophonic (adj): relating to or characterized by an isophone.

  • The isophonic boundary was clearly visible on the dialect atlas. (The boundary relating to the isophone was evident.)

• Isogloss (n): a broader term for a line on a dialect map marking a boundary for any linguistic feature (phonetic, lexical, or grammatical). An isophone is a specific type of isogloss for phonetic features.

Synonyms

• Phonetic boundary: a line that separates areas with different pronunciations.
• Sound isogloss: a specific term for a boundary of a sound feature.

Related Idioms