- (uncountable) Citron is a color mixing yellow and green
- He had his house painted citron.
- (countable) Citron is a small tree that has citrus fruit. The scientific name is Citrus medica.
- Hannah has a citron growing in her backyard.
- (countable) Citron is a fruit of a citron tree.
- She ate a citron with her lunch today.
- (countable) Citron is the candied rind of the fruit.