An area of land that supplies water to a river system
Start a free 10-day teacher trial to engage your students in all of Vocabulary.com’s word learning activities. Set up fun Vocab Jams, create a quiz, and monitor each student’s progress.
Learn more about how Vocabulary.com supports educators across the country.
Whether you’re a teacher or a learner, Vocabulary.com can put you or your class on the path to systematic vocabulary improvement.
Comprehensive K-12 personalized learning
Immersive learning for 25 languages
Trusted tutors ready to help in 300+ subjects
35,000 worksheets, games, and lesson plans
Marketplace for millions of educator-created resources
Fun educational games for kids
Spanish-English dictionary, translator, and learning
Diccionario inglés-español, traductor y sitio de aprendizaje
Fast and accurate language certification
French-English dictionary, translator, and learning