''Helios'', more fully the ''Helios New Encyclopedic Dictionary'' ( or: Νεώτερον Εγκυκλοπαιδικόν Λεξικόν Ήλιος), is a

general knowledge General knowledge is information that has been accumulated over time through various media and sources. It excludes specialized learning that can only be obtained with extensive training and information confined to a single medium. General know ...

Greek

encyclopaedia An encyclopedia is a reference work or compendium providing summaries of knowledge, either general or special, in a particular field or discipline. Encyclopedias are divided into articles or entries that are arranged alphabetically by artic ...

. Its publication commenced in 1945 while its second edition was completed in 1960, comprising a total of 18 volumes.

See also