1. comparative form of thin; having less thickness, width, or density

1. a liquid substance used to dilute paint or other materials

Examples

• The ice on the pond is getting thinner as spring approaches.
• She looks much thinner after losing twenty pounds.
• The paper in this notebook is thinner than usual.
• Add some paint thinner to make the mixture easier to apply.
• The artist used thinner to clean her brushes.
• His hair is noticeably thinner on top than it was last year.
• Mix the thinner with the paint in a 1:4 ratio.