1. A writer of dialogues 
2. A speaker in a dialogue

Derived forms: dialogists

• scalar product
• scalariform
• scalawag
• scald
• scalded milk
• scale
• scale down
• scale factor
• scale fern
• scale insect
• scale leaf
• scale moss
• scale of C major
• scale of measurement
• scale up
• scale value
• scale wax
• scaled
• scaleless
• scalelike
• scalene
• scalene muscle
• scalene triangle
• scalenus
• scalenus syndrome