General dictionaries are dictionaries that document contemporary vocabulary and are intended for everyday reference by native and fluent speakers.
Portals and aggregators
Portals and aggregators are websites that provide access to more than one dictionary and allow you to search them all at once.
Learners' dictionaries are intended for people who are learning the language as a second language.
Dictionaries on special topics
Dictionaries on special topics are dictionaries that focus on a specific subset of the vocabulary (such as new words or phrasal verbs) or which focus on a specific dialect or variant of the language.
Dictionary of the Swedish dialects in Finland OBJECT LANGUAGE Swedish METALANGUAGE Swedish GENRE Dictionaries on special topics http://kaino.kotus.fi/fo/
Etymological dictionaries are dictionaries that explain the origins of words.
Swedish Etymological Dictionary OBJECT LANGUAGE Swedish METALANGUAGE Swedish GENRE Etymological dictionaries http://runeberg.org/svetym/
Terminological dictionaries describe the vocabulary of specialized domains such as biology, mathematics or economics.