Medical Dictionary is intended for use by healthcare consumers, students, and professionals as well as anyone who wants to keep up with the burgeoning array of terminology found in today’s medical news. By staying clear of jargon, the dictionary offers fast and concise information, whether the user is searching for a description of an over-the-counter or prescription medication, a medical abbreviation, a test procedure, a medical research topic, or an illness. Over 45,000 entries from all areas of medicine and healthcare are included.

Bartleby.com publishes thousands of free online classics of reference, literature and nonfiction

... I gyd | Newydd | Hen | Ar eisiau | Byr | Hir | Categorïau Delweddau: I gyd | Di-defnydd | Newydd | Hen. Wedi dod o "http://cy.wiktionary.org/wiki/Hafan" ...

Online Dictionary - Multiple dictionaries including: English dictionary, medical dictionary, legal dictionary, financial dictionary, computer dictionary, thesaurus, dictionary of acronyms and abbreviations, dictionary of idioms, thesaurus, Columbia encyclopedia, Wikipedia encyclopedia, Hutchinson encyclopedia, examples from classic literature, pronunciations, word browser, glossary. Free access

Biology Online, information in the life sciences in the form of tutorials, references and an online dictionary of biology terms.