English vocabulary lists: “A” wordsEnglish vocabulary lists containing “amino acid”

English vocabulary lists containing “amino acid”

SpanishDictionary.com is the world's most popular Spanish-English dictionary, translation, and learning website.

FEATURES

ABOUT

SOCIAL NETWORKS

APPS

IXL Learning's Dictionary Media Group reaches over 500,000,000 learners each year.

French-English dictionary, translator, and learning

English dictionary and learning for Spanish speakers

English dictionary and learning for French speakers

Comprehensive resource for word definitions and usage

Essential reference for synonyms and antonyms

Comprehensive K-12 personalized learning

Adaptive learning for English vocabulary

Immersive learning for 25 languages

Marketplace for millions of educator-created resources

35,000+ worksheets, games, and lesson plans

Fun educational games for kids

Fast, easy, reliable language certification

Trusted tutors for 300+ subjects

Bite-sized daily word games

Playful tools to learn multiplication