species

noun

1. A group of living organisms that share important characteristics and can usually reproduce with one another.

   B1

   countable; singular and plural are both species

   • "The tiger is an endangered species."A2
   • "Scientists have discovered a new species of frog in the rainforest."B1
   • "The survival of the species depends on its ability to adapt to environmental change."B2

2. A particular type or kind of something.

   B2

   countable; often used in the phrase a species offormal

   • "This is a rare species of musical instrument."B1
   • "Fear is a species of emotional response."B2