Online dictionaries

Keeleveeb: http://www.keeleveeb.ee/ - various links to specific and general dictionaries
Oxford dictionary online: http://oxforddictionaries.com/?attempted=true
A Finnish language based dictionary: http://www.sanakirja.org/search.php?q=phylum&l=3 – allows translation to various languages including Estonian (Viro)
A Finnish language based dictionary: http://ilmainensanakirja.fi/sanakirja_englanti-suomi/qualified - allows translation to various languages including Estonian (Viro)
Medical dictionary: http://medical-dictionary.thefreedictionary.com/hygroma - a good medical English-English dictionary
British National Corpus: http://www.natcorp.ox.ac.uk/ - a place where you can find and check the existence of various collocations in English
A Russian language based dictionary: http://lingvo.yandex.ru/phylum/
A Russian language based dictionary: http://lingvo.abbyyonline.com/ru/en-ru/phylum
Medical dictionary: http://www.mondofacto.com/facts/dictionary?query=cranium – a good English- English medical dictionary online
A Russian language based dictionary and translator: http://webtran.ru/ - allows to translate into various languages
An English – Estonian general dictionary: http://enet.animato.ee/index.php?otsida=phylum&pl=0
An English – English general dictionary: http://hyperdictionary.com/search.aspx?define=hematoma
Longman dictionary: http://www.ldoceonline.com/spellcheck/?q=hematoma
A Medical dictionary: http://www.mercksource.com/pp/us/cns/cns_hl_dorlands_split.jsp?pg=/ppdocs/us/common/dorlands/dorland/misc/dmd-a-b-000.htm
Cambridge dictionary: http://dictionary.cambridge.org/dictionary/british/phylum - a good general English – English dictionary
Medical dictionary: http://www.online-medical-dictionary.org/omd.asp?q=IOP
English – Finnish medical dictionary: http://webcgi.oulu.fi/kielikeskus/o/medic/
General English – Estonian dictionary: http://dict.ibs.ee/
Medical dictionary: http://www.merriam-webster.com/medlineplus/scapula
Medical dictionary: http://www.medterms.com/script/main/art.asp?articlekey=8206
Medical dictionary: http://www.medicaldictionaryweb.com/
OneLook dictionary: http://onelook.com/?w=IOP&ls=a
Babylon 8: http://www.babylon.com/products/babylon.html - an electronic dictionary, has to be downloaded
General English – English dictionary: http://www.yourdictionary.com/
Environmental dictionary: http://www.seit.ee/sass/?word=%C3%A4ravool&ID=1&showing=2&search_word=Otsi&keel=ee&type=tapne
Eestikeele instituut: www.eki.ee – Estonian – Estonian dictionary, Estonian – English dictionary, Estonian – Russian dictionary
Russian – English dictionary: www.multitran.ru – forum of translators