Encyclopaedia Britannica
Explore the fact-checked online encyclopedia from Encyclopaedia Britannica with hundreds of thousands of objective articles, biographies, videos, and more.
Dictionary-Encyclopedia
Word Reference
Word Reference
Free online dictionaries: Spanish, French, Italian, German and more. Conjugations, audio pronunciations and forums for your questions.
World History Encyclopedia
World History Encyclopedia
World History Encyclopedia is a non-profit organization publishing the world's most-read history encyclopedia. Its mission is to engage people with cultural heritage and to improve history education worldwide. All content on this encyclopedia is goes through strict editorial review prior to publication.
Merriam-Webster Dictionary
Merriam-Webster Dictionary
For more than 150 years, Merriam-Webster has been America's leading and most-trusted provider of language information. Each month, Merriam-Webster.com offers language guidance to more than 40 million visitors.
Dictionary.com
Dictionary.com
Dictionary.com is the world's leading digital dictionary. We provide millions of English definitions, spellings, audio pronunciations, example sentences, and word origins. Dictionary.com’s main, proprietary source is the Random House Unabridged Dictionary, which is continually updated by our team of experienced lexicographers and supplemented with trusted, established sources including American Heritage and Harper Collins to support a range of language needs.